]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * fs/cifs/connect.c | |
3 | * | |
366781c1 | 4 | * Copyright (C) International Business Machines Corp., 2002,2008 |
1da177e4 LT |
5 | * Author(s): Steve French (sfrench@us.ibm.com) |
6 | * | |
7 | * This library is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU Lesser General Public License as published | |
9 | * by the Free Software Foundation; either version 2.1 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This library is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | |
15 | * the GNU Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public License | |
18 | * along with this library; if not, write to the Free Software | |
fb8c4b14 | 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
1da177e4 LT |
20 | */ |
21 | #include <linux/fs.h> | |
22 | #include <linux/net.h> | |
23 | #include <linux/string.h> | |
24 | #include <linux/list.h> | |
25 | #include <linux/wait.h> | |
26 | #include <linux/ipv6.h> | |
27 | #include <linux/pagemap.h> | |
28 | #include <linux/ctype.h> | |
29 | #include <linux/utsname.h> | |
30 | #include <linux/mempool.h> | |
b8643e1b | 31 | #include <linux/delay.h> |
f191401f | 32 | #include <linux/completion.h> |
aaf737ad | 33 | #include <linux/kthread.h> |
0ae0efad | 34 | #include <linux/pagevec.h> |
7dfb7103 | 35 | #include <linux/freezer.h> |
1da177e4 LT |
36 | #include <asm/uaccess.h> |
37 | #include <asm/processor.h> | |
38 | #include "cifspdu.h" | |
39 | #include "cifsglob.h" | |
40 | #include "cifsproto.h" | |
41 | #include "cifs_unicode.h" | |
42 | #include "cifs_debug.h" | |
43 | #include "cifs_fs_sb.h" | |
44 | #include "ntlmssp.h" | |
45 | #include "nterr.h" | |
46 | #include "rfc1002pdu.h" | |
a2653eba | 47 | #include "cn_cifs.h" |
1da177e4 LT |
48 | |
49 | #define CIFS_PORT 445 | |
50 | #define RFC1001_PORT 139 | |
51 | ||
1da177e4 LT |
52 | extern void SMBNTencrypt(unsigned char *passwd, unsigned char *c8, |
53 | unsigned char *p24); | |
54 | ||
55 | extern mempool_t *cifs_req_poolp; | |
56 | ||
57 | struct smb_vol { | |
58 | char *username; | |
59 | char *password; | |
60 | char *domainname; | |
61 | char *UNC; | |
62 | char *UNCip; | |
63 | char *in6_addr; /* ipv6 address as human readable form of in6_addr */ | |
64 | char *iocharset; /* local code page for mapping to and from Unicode */ | |
65 | char source_rfc1001_name[16]; /* netbios name of client */ | |
a10faeb2 | 66 | char target_rfc1001_name[16]; /* netbios name of server for Win9x/ME */ |
1da177e4 LT |
67 | uid_t linux_uid; |
68 | gid_t linux_gid; | |
69 | mode_t file_mode; | |
70 | mode_t dir_mode; | |
189acaae | 71 | unsigned secFlg; |
4b18f2a9 SF |
72 | bool rw:1; |
73 | bool retry:1; | |
74 | bool intr:1; | |
75 | bool setuids:1; | |
76 | bool override_uid:1; | |
77 | bool override_gid:1; | |
d0a9c078 | 78 | bool dynperm:1; |
4b18f2a9 SF |
79 | bool noperm:1; |
80 | bool no_psx_acl:1; /* set if posix acl support should be disabled */ | |
81 | bool cifs_acl:1; | |
82 | bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ | |
83 | bool server_ino:1; /* use inode numbers from server ie UniqueId */ | |
84 | bool direct_io:1; | |
85 | bool remap:1; /* set to remap seven reserved chars in filenames */ | |
86 | bool posix_paths:1; /* unset to not ask for posix pathnames. */ | |
87 | bool no_linux_ext:1; | |
88 | bool sfu_emul:1; | |
89 | bool nullauth:1; /* attempt to authenticate with null user */ | |
c46fa8ac SF |
90 | unsigned nocase; /* request case insensitive filenames */ |
91 | unsigned nobrl; /* disable sending byte range locks to srv */ | |
1da177e4 LT |
92 | unsigned int rsize; |
93 | unsigned int wsize; | |
94 | unsigned int sockopt; | |
95 | unsigned short int port; | |
fb8c4b14 | 96 | char *prepath; |
1da177e4 LT |
97 | }; |
98 | ||
fb8c4b14 | 99 | static int ipv4_connect(struct sockaddr_in *psin_server, |
1da177e4 | 100 | struct socket **csocket, |
fb8c4b14 SF |
101 | char *netb_name, |
102 | char *server_netb_name); | |
103 | static int ipv6_connect(struct sockaddr_in6 *psin_server, | |
1da177e4 LT |
104 | struct socket **csocket); |
105 | ||
106 | ||
fb8c4b14 | 107 | /* |
1da177e4 | 108 | * cifs tcp session reconnection |
fb8c4b14 | 109 | * |
1da177e4 LT |
110 | * mark tcp session as reconnecting so temporarily locked |
111 | * mark all smb sessions as reconnecting for tcp session | |
112 | * reconnect tcp session | |
113 | * wake up waiters on reconnection? - (not needed currently) | |
114 | */ | |
115 | ||
2cd646a2 | 116 | static int |
1da177e4 LT |
117 | cifs_reconnect(struct TCP_Server_Info *server) |
118 | { | |
119 | int rc = 0; | |
120 | struct list_head *tmp; | |
121 | struct cifsSesInfo *ses; | |
122 | struct cifsTconInfo *tcon; | |
fb8c4b14 | 123 | struct mid_q_entry *mid_entry; |
50c2f753 | 124 | |
1da177e4 | 125 | spin_lock(&GlobalMid_Lock); |
26f57364 | 126 | if (kthread_should_stop()) { |
fb8c4b14 | 127 | /* the demux thread will exit normally |
1da177e4 LT |
128 | next time through the loop */ |
129 | spin_unlock(&GlobalMid_Lock); | |
130 | return rc; | |
131 | } else | |
132 | server->tcpStatus = CifsNeedReconnect; | |
133 | spin_unlock(&GlobalMid_Lock); | |
134 | server->maxBuf = 0; | |
135 | ||
e4eb295d | 136 | cFYI(1, ("Reconnecting tcp session")); |
1da177e4 LT |
137 | |
138 | /* before reconnecting the tcp session, mark the smb session (uid) | |
139 | and the tid bad so they are not used until reconnected */ | |
140 | read_lock(&GlobalSMBSeslock); | |
141 | list_for_each(tmp, &GlobalSMBSessionList) { | |
142 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
143 | if (ses->server) { | |
144 | if (ses->server == server) { | |
145 | ses->status = CifsNeedReconnect; | |
146 | ses->ipc_tid = 0; | |
147 | } | |
148 | } | |
149 | /* else tcp and smb sessions need reconnection */ | |
150 | } | |
151 | list_for_each(tmp, &GlobalTreeConnectionList) { | |
152 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); | |
26f57364 | 153 | if ((tcon) && (tcon->ses) && (tcon->ses->server == server)) |
1da177e4 | 154 | tcon->tidStatus = CifsNeedReconnect; |
1da177e4 LT |
155 | } |
156 | read_unlock(&GlobalSMBSeslock); | |
157 | /* do not want to be sending data on a socket we are freeing */ | |
fb8c4b14 SF |
158 | down(&server->tcpSem); |
159 | if (server->ssocket) { | |
467a8f8d | 160 | cFYI(1, ("State: 0x%x Flags: 0x%lx", server->ssocket->state, |
1da177e4 | 161 | server->ssocket->flags)); |
91cf45f0 | 162 | kernel_sock_shutdown(server->ssocket, SHUT_WR); |
fb8c4b14 | 163 | cFYI(1, ("Post shutdown state: 0x%x Flags: 0x%lx", |
467a8f8d | 164 | server->ssocket->state, |
1da177e4 LT |
165 | server->ssocket->flags)); |
166 | sock_release(server->ssocket); | |
167 | server->ssocket = NULL; | |
168 | } | |
169 | ||
170 | spin_lock(&GlobalMid_Lock); | |
171 | list_for_each(tmp, &server->pending_mid_q) { | |
172 | mid_entry = list_entry(tmp, struct | |
173 | mid_q_entry, | |
174 | qhead); | |
fb8c4b14 SF |
175 | if (mid_entry) { |
176 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
09d1db5c SF |
177 | /* Mark other intransit requests as needing |
178 | retry so we do not immediately mark the | |
179 | session bad again (ie after we reconnect | |
180 | below) as they timeout too */ | |
1da177e4 LT |
181 | mid_entry->midState = MID_RETRY_NEEDED; |
182 | } | |
183 | } | |
184 | } | |
185 | spin_unlock(&GlobalMid_Lock); | |
fb8c4b14 | 186 | up(&server->tcpSem); |
1da177e4 | 187 | |
26f57364 | 188 | while ((!kthread_should_stop()) && (server->tcpStatus != CifsGood)) { |
6c3d8909 | 189 | try_to_freeze(); |
fb8c4b14 SF |
190 | if (server->protocolType == IPV6) { |
191 | rc = ipv6_connect(&server->addr.sockAddr6, | |
192 | &server->ssocket); | |
1da177e4 | 193 | } else { |
fb8c4b14 | 194 | rc = ipv4_connect(&server->addr.sockAddr, |
1da177e4 | 195 | &server->ssocket, |
a10faeb2 SF |
196 | server->workstation_RFC1001_name, |
197 | server->server_RFC1001_name); | |
1da177e4 | 198 | } |
fb8c4b14 SF |
199 | if (rc) { |
200 | cFYI(1, ("reconnect error %d", rc)); | |
0cb766ae | 201 | msleep(3000); |
1da177e4 LT |
202 | } else { |
203 | atomic_inc(&tcpSesReconnectCount); | |
204 | spin_lock(&GlobalMid_Lock); | |
26f57364 | 205 | if (!kthread_should_stop()) |
1da177e4 | 206 | server->tcpStatus = CifsGood; |
ad009ac9 | 207 | server->sequence_number = 0; |
fb8c4b14 | 208 | spin_unlock(&GlobalMid_Lock); |
1da177e4 LT |
209 | /* atomic_set(&server->inFlight,0);*/ |
210 | wake_up(&server->response_q); | |
211 | } | |
212 | } | |
213 | return rc; | |
214 | } | |
215 | ||
fb8c4b14 | 216 | /* |
e4eb295d SF |
217 | return codes: |
218 | 0 not a transact2, or all data present | |
219 | >0 transact2 with that much data missing | |
220 | -EINVAL = invalid transact2 | |
221 | ||
222 | */ | |
fb8c4b14 | 223 | static int check2ndT2(struct smb_hdr *pSMB, unsigned int maxBufSize) |
e4eb295d | 224 | { |
fb8c4b14 SF |
225 | struct smb_t2_rsp *pSMBt; |
226 | int total_data_size; | |
e4eb295d SF |
227 | int data_in_this_rsp; |
228 | int remaining; | |
229 | ||
fb8c4b14 | 230 | if (pSMB->Command != SMB_COM_TRANSACTION2) |
e4eb295d SF |
231 | return 0; |
232 | ||
fb8c4b14 SF |
233 | /* check for plausible wct, bcc and t2 data and parm sizes */ |
234 | /* check for parm and data offset going beyond end of smb */ | |
235 | if (pSMB->WordCount != 10) { /* coalesce_t2 depends on this */ | |
467a8f8d | 236 | cFYI(1, ("invalid transact2 word count")); |
e4eb295d SF |
237 | return -EINVAL; |
238 | } | |
239 | ||
240 | pSMBt = (struct smb_t2_rsp *)pSMB; | |
241 | ||
242 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
243 | data_in_this_rsp = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
244 | ||
245 | remaining = total_data_size - data_in_this_rsp; | |
246 | ||
fb8c4b14 | 247 | if (remaining == 0) |
e4eb295d | 248 | return 0; |
fb8c4b14 | 249 | else if (remaining < 0) { |
467a8f8d | 250 | cFYI(1, ("total data %d smaller than data in frame %d", |
e4eb295d SF |
251 | total_data_size, data_in_this_rsp)); |
252 | return -EINVAL; | |
253 | } else { | |
467a8f8d | 254 | cFYI(1, ("missing %d bytes from transact2, check next response", |
e4eb295d | 255 | remaining)); |
fb8c4b14 SF |
256 | if (total_data_size > maxBufSize) { |
257 | cERROR(1, ("TotalDataSize %d is over maximum buffer %d", | |
258 | total_data_size, maxBufSize)); | |
259 | return -EINVAL; | |
e4eb295d SF |
260 | } |
261 | return remaining; | |
262 | } | |
263 | } | |
264 | ||
fb8c4b14 | 265 | static int coalesce_t2(struct smb_hdr *psecond, struct smb_hdr *pTargetSMB) |
e4eb295d SF |
266 | { |
267 | struct smb_t2_rsp *pSMB2 = (struct smb_t2_rsp *)psecond; | |
268 | struct smb_t2_rsp *pSMBt = (struct smb_t2_rsp *)pTargetSMB; | |
269 | int total_data_size; | |
270 | int total_in_buf; | |
271 | int remaining; | |
272 | int total_in_buf2; | |
fb8c4b14 SF |
273 | char *data_area_of_target; |
274 | char *data_area_of_buf2; | |
e4eb295d SF |
275 | __u16 byte_count; |
276 | ||
277 | total_data_size = le16_to_cpu(pSMBt->t2_rsp.TotalDataCount); | |
278 | ||
fb8c4b14 | 279 | if (total_data_size != le16_to_cpu(pSMB2->t2_rsp.TotalDataCount)) { |
63135e08 | 280 | cFYI(1, ("total data size of primary and secondary t2 differ")); |
e4eb295d SF |
281 | } |
282 | ||
283 | total_in_buf = le16_to_cpu(pSMBt->t2_rsp.DataCount); | |
284 | ||
285 | remaining = total_data_size - total_in_buf; | |
50c2f753 | 286 | |
fb8c4b14 | 287 | if (remaining < 0) |
e4eb295d SF |
288 | return -EINVAL; |
289 | ||
fb8c4b14 | 290 | if (remaining == 0) /* nothing to do, ignore */ |
e4eb295d | 291 | return 0; |
50c2f753 | 292 | |
e4eb295d | 293 | total_in_buf2 = le16_to_cpu(pSMB2->t2_rsp.DataCount); |
fb8c4b14 | 294 | if (remaining < total_in_buf2) { |
467a8f8d | 295 | cFYI(1, ("transact2 2nd response contains too much data")); |
e4eb295d SF |
296 | } |
297 | ||
298 | /* find end of first SMB data area */ | |
fb8c4b14 | 299 | data_area_of_target = (char *)&pSMBt->hdr.Protocol + |
e4eb295d SF |
300 | le16_to_cpu(pSMBt->t2_rsp.DataOffset); |
301 | /* validate target area */ | |
302 | ||
303 | data_area_of_buf2 = (char *) &pSMB2->hdr.Protocol + | |
fb8c4b14 | 304 | le16_to_cpu(pSMB2->t2_rsp.DataOffset); |
e4eb295d SF |
305 | |
306 | data_area_of_target += total_in_buf; | |
307 | ||
308 | /* copy second buffer into end of first buffer */ | |
fb8c4b14 | 309 | memcpy(data_area_of_target, data_area_of_buf2, total_in_buf2); |
e4eb295d SF |
310 | total_in_buf += total_in_buf2; |
311 | pSMBt->t2_rsp.DataCount = cpu_to_le16(total_in_buf); | |
312 | byte_count = le16_to_cpu(BCC_LE(pTargetSMB)); | |
313 | byte_count += total_in_buf2; | |
314 | BCC_LE(pTargetSMB) = cpu_to_le16(byte_count); | |
315 | ||
70ca734a | 316 | byte_count = pTargetSMB->smb_buf_length; |
e4eb295d SF |
317 | byte_count += total_in_buf2; |
318 | ||
319 | /* BB also add check that we are not beyond maximum buffer size */ | |
50c2f753 | 320 | |
70ca734a | 321 | pTargetSMB->smb_buf_length = byte_count; |
e4eb295d | 322 | |
fb8c4b14 | 323 | if (remaining == total_in_buf2) { |
467a8f8d | 324 | cFYI(1, ("found the last secondary response")); |
e4eb295d SF |
325 | return 0; /* we are done */ |
326 | } else /* more responses to go */ | |
327 | return 1; | |
328 | ||
329 | } | |
330 | ||
1da177e4 LT |
331 | static int |
332 | cifs_demultiplex_thread(struct TCP_Server_Info *server) | |
333 | { | |
334 | int length; | |
335 | unsigned int pdu_length, total_read; | |
336 | struct smb_hdr *smb_buffer = NULL; | |
b8643e1b SF |
337 | struct smb_hdr *bigbuf = NULL; |
338 | struct smb_hdr *smallbuf = NULL; | |
1da177e4 LT |
339 | struct msghdr smb_msg; |
340 | struct kvec iov; | |
341 | struct socket *csocket = server->ssocket; | |
342 | struct list_head *tmp; | |
343 | struct cifsSesInfo *ses; | |
344 | struct task_struct *task_to_wake = NULL; | |
345 | struct mid_q_entry *mid_entry; | |
70ca734a | 346 | char temp; |
4b18f2a9 SF |
347 | bool isLargeBuf = false; |
348 | bool isMultiRsp; | |
e4eb295d | 349 | int reconnect; |
1da177e4 | 350 | |
1da177e4 | 351 | current->flags |= PF_MEMALLOC; |
ba25f9dc | 352 | cFYI(1, ("Demultiplex PID: %d", task_pid_nr(current))); |
fb8c4b14 | 353 | write_lock(&GlobalSMBSeslock); |
1da177e4 LT |
354 | atomic_inc(&tcpSesAllocCount); |
355 | length = tcpSesAllocCount.counter; | |
356 | write_unlock(&GlobalSMBSeslock); | |
26f57364 SF |
357 | if (length > 1) |
358 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
359 | GFP_KERNEL); | |
1da177e4 | 360 | |
83144186 | 361 | set_freezable(); |
aaf737ad | 362 | while (!kthread_should_stop()) { |
ede1327e SF |
363 | if (try_to_freeze()) |
364 | continue; | |
b8643e1b SF |
365 | if (bigbuf == NULL) { |
366 | bigbuf = cifs_buf_get(); | |
0fd1ffe0 PM |
367 | if (!bigbuf) { |
368 | cERROR(1, ("No memory for large SMB response")); | |
b8643e1b SF |
369 | msleep(3000); |
370 | /* retry will check if exiting */ | |
371 | continue; | |
372 | } | |
0fd1ffe0 PM |
373 | } else if (isLargeBuf) { |
374 | /* we are reusing a dirty large buf, clear its start */ | |
26f57364 | 375 | memset(bigbuf, 0, sizeof(struct smb_hdr)); |
1da177e4 | 376 | } |
b8643e1b SF |
377 | |
378 | if (smallbuf == NULL) { | |
379 | smallbuf = cifs_small_buf_get(); | |
0fd1ffe0 PM |
380 | if (!smallbuf) { |
381 | cERROR(1, ("No memory for SMB response")); | |
b8643e1b SF |
382 | msleep(1000); |
383 | /* retry will check if exiting */ | |
384 | continue; | |
385 | } | |
386 | /* beginning of smb buffer is cleared in our buf_get */ | |
387 | } else /* if existing small buf clear beginning */ | |
26f57364 | 388 | memset(smallbuf, 0, sizeof(struct smb_hdr)); |
b8643e1b | 389 | |
4b18f2a9 SF |
390 | isLargeBuf = false; |
391 | isMultiRsp = false; | |
b8643e1b | 392 | smb_buffer = smallbuf; |
1da177e4 LT |
393 | iov.iov_base = smb_buffer; |
394 | iov.iov_len = 4; | |
395 | smb_msg.msg_control = NULL; | |
396 | smb_msg.msg_controllen = 0; | |
f01d5e14 SF |
397 | pdu_length = 4; /* enough to get RFC1001 header */ |
398 | incomplete_rcv: | |
1da177e4 LT |
399 | length = |
400 | kernel_recvmsg(csocket, &smb_msg, | |
f01d5e14 | 401 | &iov, 1, pdu_length, 0 /* BB other flags? */); |
1da177e4 | 402 | |
26f57364 | 403 | if (kthread_should_stop()) { |
1da177e4 LT |
404 | break; |
405 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
0fd1ffe0 | 406 | cFYI(1, ("Reconnect after server stopped responding")); |
1da177e4 | 407 | cifs_reconnect(server); |
0fd1ffe0 | 408 | cFYI(1, ("call to reconnect done")); |
1da177e4 LT |
409 | csocket = server->ssocket; |
410 | continue; | |
411 | } else if ((length == -ERESTARTSYS) || (length == -EAGAIN)) { | |
b8643e1b | 412 | msleep(1); /* minimum sleep to prevent looping |
1da177e4 LT |
413 | allowing socket to clear and app threads to set |
414 | tcpStatus CifsNeedReconnect if server hung */ | |
c18c732e SF |
415 | if (pdu_length < 4) |
416 | goto incomplete_rcv; | |
417 | else | |
418 | continue; | |
1da177e4 | 419 | } else if (length <= 0) { |
0fd1ffe0 PM |
420 | if (server->tcpStatus == CifsNew) { |
421 | cFYI(1, ("tcp session abend after SMBnegprot")); | |
09d1db5c SF |
422 | /* some servers kill the TCP session rather than |
423 | returning an SMB negprot error, in which | |
424 | case reconnecting here is not going to help, | |
425 | and so simply return error to mount */ | |
1da177e4 LT |
426 | break; |
427 | } | |
0fd1ffe0 | 428 | if (!try_to_freeze() && (length == -EINTR)) { |
467a8f8d | 429 | cFYI(1, ("cifsd thread killed")); |
1da177e4 LT |
430 | break; |
431 | } | |
467a8f8d | 432 | cFYI(1, ("Reconnect after unexpected peek error %d", |
57337e42 | 433 | length)); |
1da177e4 LT |
434 | cifs_reconnect(server); |
435 | csocket = server->ssocket; | |
436 | wake_up(&server->response_q); | |
437 | continue; | |
2a974680 PT |
438 | } else if (length < pdu_length) { |
439 | cFYI(1, ("requested %d bytes but only got %d bytes", | |
440 | pdu_length, length)); | |
f01d5e14 | 441 | pdu_length -= length; |
f01d5e14 SF |
442 | msleep(1); |
443 | goto incomplete_rcv; | |
46810cbf | 444 | } |
1da177e4 | 445 | |
70ca734a SF |
446 | /* The right amount was read from socket - 4 bytes */ |
447 | /* so we can now interpret the length field */ | |
46810cbf | 448 | |
70ca734a SF |
449 | /* the first byte big endian of the length field, |
450 | is actually not part of the length but the type | |
451 | with the most common, zero, as regular data */ | |
452 | temp = *((char *) smb_buffer); | |
46810cbf | 453 | |
fb8c4b14 | 454 | /* Note that FC 1001 length is big endian on the wire, |
70ca734a SF |
455 | but we convert it here so it is always manipulated |
456 | as host byte order */ | |
46810cbf | 457 | pdu_length = ntohl(smb_buffer->smb_buf_length); |
70ca734a SF |
458 | smb_buffer->smb_buf_length = pdu_length; |
459 | ||
467a8f8d | 460 | cFYI(1, ("rfc1002 length 0x%x", pdu_length+4)); |
46810cbf | 461 | |
70ca734a | 462 | if (temp == (char) RFC1002_SESSION_KEEP_ALIVE) { |
fb8c4b14 | 463 | continue; |
70ca734a | 464 | } else if (temp == (char)RFC1002_POSITIVE_SESSION_RESPONSE) { |
467a8f8d | 465 | cFYI(1, ("Good RFC 1002 session rsp")); |
e4eb295d | 466 | continue; |
70ca734a | 467 | } else if (temp == (char)RFC1002_NEGATIVE_SESSION_RESPONSE) { |
fb8c4b14 | 468 | /* we get this from Windows 98 instead of |
46810cbf | 469 | an error on SMB negprot response */ |
fb8c4b14 | 470 | cFYI(1, ("Negative RFC1002 Session Response Error 0x%x)", |
70ca734a | 471 | pdu_length)); |
fb8c4b14 SF |
472 | if (server->tcpStatus == CifsNew) { |
473 | /* if nack on negprot (rather than | |
46810cbf SF |
474 | ret of smb negprot error) reconnecting |
475 | not going to help, ret error to mount */ | |
476 | break; | |
477 | } else { | |
478 | /* give server a second to | |
479 | clean up before reconnect attempt */ | |
480 | msleep(1000); | |
481 | /* always try 445 first on reconnect | |
482 | since we get NACK on some if we ever | |
fb8c4b14 | 483 | connected to port 139 (the NACK is |
46810cbf SF |
484 | since we do not begin with RFC1001 |
485 | session initialize frame) */ | |
fb8c4b14 | 486 | server->addr.sockAddr.sin_port = |
46810cbf | 487 | htons(CIFS_PORT); |
1da177e4 LT |
488 | cifs_reconnect(server); |
489 | csocket = server->ssocket; | |
46810cbf | 490 | wake_up(&server->response_q); |
1da177e4 | 491 | continue; |
46810cbf | 492 | } |
70ca734a | 493 | } else if (temp != (char) 0) { |
fb8c4b14 | 494 | cERROR(1, ("Unknown RFC 1002 frame")); |
70ca734a SF |
495 | cifs_dump_mem(" Received Data: ", (char *)smb_buffer, |
496 | length); | |
46810cbf SF |
497 | cifs_reconnect(server); |
498 | csocket = server->ssocket; | |
499 | continue; | |
e4eb295d SF |
500 | } |
501 | ||
502 | /* else we have an SMB response */ | |
fb8c4b14 | 503 | if ((pdu_length > CIFSMaxBufSize + MAX_CIFS_HDR_SIZE - 4) || |
26f57364 | 504 | (pdu_length < sizeof(struct smb_hdr) - 1 - 4)) { |
e4eb295d | 505 | cERROR(1, ("Invalid size SMB length %d pdu_length %d", |
46810cbf | 506 | length, pdu_length+4)); |
e4eb295d SF |
507 | cifs_reconnect(server); |
508 | csocket = server->ssocket; | |
509 | wake_up(&server->response_q); | |
510 | continue; | |
fb8c4b14 | 511 | } |
e4eb295d SF |
512 | |
513 | /* else length ok */ | |
514 | reconnect = 0; | |
515 | ||
fb8c4b14 | 516 | if (pdu_length > MAX_CIFS_SMALL_BUFFER_SIZE - 4) { |
4b18f2a9 | 517 | isLargeBuf = true; |
e4eb295d SF |
518 | memcpy(bigbuf, smallbuf, 4); |
519 | smb_buffer = bigbuf; | |
520 | } | |
521 | length = 0; | |
522 | iov.iov_base = 4 + (char *)smb_buffer; | |
523 | iov.iov_len = pdu_length; | |
fb8c4b14 | 524 | for (total_read = 0; total_read < pdu_length; |
e4eb295d SF |
525 | total_read += length) { |
526 | length = kernel_recvmsg(csocket, &smb_msg, &iov, 1, | |
527 | pdu_length - total_read, 0); | |
26f57364 | 528 | if (kthread_should_stop() || |
e4eb295d SF |
529 | (length == -EINTR)) { |
530 | /* then will exit */ | |
531 | reconnect = 2; | |
532 | break; | |
533 | } else if (server->tcpStatus == CifsNeedReconnect) { | |
46810cbf SF |
534 | cifs_reconnect(server); |
535 | csocket = server->ssocket; | |
fb8c4b14 | 536 | /* Reconnect wakes up rspns q */ |
e4eb295d SF |
537 | /* Now we will reread sock */ |
538 | reconnect = 1; | |
539 | break; | |
fb8c4b14 | 540 | } else if ((length == -ERESTARTSYS) || |
e4eb295d SF |
541 | (length == -EAGAIN)) { |
542 | msleep(1); /* minimum sleep to prevent looping, | |
fb8c4b14 | 543 | allowing socket to clear and app |
e4eb295d SF |
544 | threads to set tcpStatus |
545 | CifsNeedReconnect if server hung*/ | |
c18c732e | 546 | length = 0; |
46810cbf | 547 | continue; |
e4eb295d | 548 | } else if (length <= 0) { |
fb8c4b14 | 549 | cERROR(1, ("Received no data, expecting %d", |
e4eb295d SF |
550 | pdu_length - total_read)); |
551 | cifs_reconnect(server); | |
552 | csocket = server->ssocket; | |
553 | reconnect = 1; | |
554 | break; | |
46810cbf | 555 | } |
e4eb295d | 556 | } |
fb8c4b14 | 557 | if (reconnect == 2) |
e4eb295d | 558 | break; |
fb8c4b14 | 559 | else if (reconnect == 1) |
e4eb295d | 560 | continue; |
1da177e4 | 561 | |
e4eb295d | 562 | length += 4; /* account for rfc1002 hdr */ |
50c2f753 | 563 | |
09d1db5c | 564 | |
e4eb295d | 565 | dump_smb(smb_buffer, length); |
184ed211 | 566 | if (checkSMB(smb_buffer, smb_buffer->Mid, total_read+4)) { |
b387eaeb | 567 | cifs_dump_mem("Bad SMB: ", smb_buffer, 48); |
e4eb295d SF |
568 | continue; |
569 | } | |
1da177e4 | 570 | |
e4eb295d SF |
571 | |
572 | task_to_wake = NULL; | |
573 | spin_lock(&GlobalMid_Lock); | |
574 | list_for_each(tmp, &server->pending_mid_q) { | |
575 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
576 | ||
50c2f753 | 577 | if ((mid_entry->mid == smb_buffer->Mid) && |
e4eb295d SF |
578 | (mid_entry->midState == MID_REQUEST_SUBMITTED) && |
579 | (mid_entry->command == smb_buffer->Command)) { | |
fb8c4b14 | 580 | if (check2ndT2(smb_buffer,server->maxBuf) > 0) { |
e4eb295d | 581 | /* We have a multipart transact2 resp */ |
4b18f2a9 | 582 | isMultiRsp = true; |
fb8c4b14 | 583 | if (mid_entry->resp_buf) { |
e4eb295d | 584 | /* merge response - fix up 1st*/ |
50c2f753 | 585 | if (coalesce_t2(smb_buffer, |
e4eb295d | 586 | mid_entry->resp_buf)) { |
4b18f2a9 SF |
587 | mid_entry->multiRsp = |
588 | true; | |
e4eb295d SF |
589 | break; |
590 | } else { | |
591 | /* all parts received */ | |
4b18f2a9 SF |
592 | mid_entry->multiEnd = |
593 | true; | |
50c2f753 | 594 | goto multi_t2_fnd; |
e4eb295d SF |
595 | } |
596 | } else { | |
fb8c4b14 | 597 | if (!isLargeBuf) { |
e4eb295d SF |
598 | cERROR(1,("1st trans2 resp needs bigbuf")); |
599 | /* BB maybe we can fix this up, switch | |
50c2f753 | 600 | to already allocated large buffer? */ |
e4eb295d | 601 | } else { |
cd63499c | 602 | /* Have first buffer */ |
e4eb295d SF |
603 | mid_entry->resp_buf = |
604 | smb_buffer; | |
4b18f2a9 SF |
605 | mid_entry->largeBuf = |
606 | true; | |
e4eb295d SF |
607 | bigbuf = NULL; |
608 | } | |
609 | } | |
610 | break; | |
50c2f753 | 611 | } |
e4eb295d | 612 | mid_entry->resp_buf = smb_buffer; |
4b18f2a9 | 613 | mid_entry->largeBuf = isLargeBuf; |
e4eb295d SF |
614 | multi_t2_fnd: |
615 | task_to_wake = mid_entry->tsk; | |
616 | mid_entry->midState = MID_RESPONSE_RECEIVED; | |
1047abc1 SF |
617 | #ifdef CONFIG_CIFS_STATS2 |
618 | mid_entry->when_received = jiffies; | |
619 | #endif | |
3a5ff61c SF |
620 | /* so we do not time out requests to server |
621 | which is still responding (since server could | |
622 | be busy but not dead) */ | |
623 | server->lstrp = jiffies; | |
e4eb295d | 624 | break; |
46810cbf | 625 | } |
1da177e4 | 626 | } |
e4eb295d SF |
627 | spin_unlock(&GlobalMid_Lock); |
628 | if (task_to_wake) { | |
cd63499c | 629 | /* Was previous buf put in mpx struct for multi-rsp? */ |
fb8c4b14 | 630 | if (!isMultiRsp) { |
cd63499c | 631 | /* smb buffer will be freed by user thread */ |
26f57364 | 632 | if (isLargeBuf) |
cd63499c | 633 | bigbuf = NULL; |
26f57364 | 634 | else |
cd63499c SF |
635 | smallbuf = NULL; |
636 | } | |
e4eb295d | 637 | wake_up_process(task_to_wake); |
4b18f2a9 SF |
638 | } else if (!is_valid_oplock_break(smb_buffer, server) && |
639 | !isMultiRsp) { | |
50c2f753 SF |
640 | cERROR(1, ("No task to wake, unknown frame received! " |
641 | "NumMids %d", midCount.counter)); | |
642 | cifs_dump_mem("Received Data is: ", (char *)smb_buffer, | |
70ca734a | 643 | sizeof(struct smb_hdr)); |
3979877e SF |
644 | #ifdef CONFIG_CIFS_DEBUG2 |
645 | cifs_dump_detail(smb_buffer); | |
646 | cifs_dump_mids(server); | |
647 | #endif /* CIFS_DEBUG2 */ | |
50c2f753 | 648 | |
e4eb295d SF |
649 | } |
650 | } /* end while !EXITING */ | |
651 | ||
1da177e4 LT |
652 | spin_lock(&GlobalMid_Lock); |
653 | server->tcpStatus = CifsExiting; | |
e691b9d1 SF |
654 | spin_unlock(&GlobalMid_Lock); |
655 | ||
656 | /* don't exit until kthread_stop is called */ | |
657 | set_current_state(TASK_UNINTERRUPTIBLE); | |
658 | while (!kthread_should_stop()) { | |
659 | schedule(); | |
660 | set_current_state(TASK_UNINTERRUPTIBLE); | |
661 | } | |
662 | set_current_state(TASK_RUNNING); | |
663 | ||
31ca3bc3 SF |
664 | /* check if we have blocked requests that need to free */ |
665 | /* Note that cifs_max_pending is normally 50, but | |
666 | can be set at module install time to as little as two */ | |
e691b9d1 | 667 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 668 | if (atomic_read(&server->inFlight) >= cifs_max_pending) |
31ca3bc3 SF |
669 | atomic_set(&server->inFlight, cifs_max_pending - 1); |
670 | /* We do not want to set the max_pending too low or we | |
671 | could end up with the counter going negative */ | |
1da177e4 | 672 | spin_unlock(&GlobalMid_Lock); |
50c2f753 | 673 | /* Although there should not be any requests blocked on |
1da177e4 | 674 | this queue it can not hurt to be paranoid and try to wake up requests |
09d1db5c | 675 | that may haven been blocked when more than 50 at time were on the wire |
1da177e4 LT |
676 | to the same server - they now will see the session is in exit state |
677 | and get out of SendReceive. */ | |
678 | wake_up_all(&server->request_q); | |
679 | /* give those requests time to exit */ | |
b8643e1b | 680 | msleep(125); |
50c2f753 | 681 | |
fb8c4b14 | 682 | if (server->ssocket) { |
1da177e4 LT |
683 | sock_release(csocket); |
684 | server->ssocket = NULL; | |
685 | } | |
b8643e1b | 686 | /* buffer usuallly freed in free_mid - need to free it here on exit */ |
a8a11d39 MK |
687 | cifs_buf_release(bigbuf); |
688 | if (smallbuf) /* no sense logging a debug message if NULL */ | |
b8643e1b | 689 | cifs_small_buf_release(smallbuf); |
1da177e4 LT |
690 | |
691 | read_lock(&GlobalSMBSeslock); | |
692 | if (list_empty(&server->pending_mid_q)) { | |
09d1db5c SF |
693 | /* loop through server session structures attached to this and |
694 | mark them dead */ | |
1da177e4 LT |
695 | list_for_each(tmp, &GlobalSMBSessionList) { |
696 | ses = | |
697 | list_entry(tmp, struct cifsSesInfo, | |
698 | cifsSessionList); | |
699 | if (ses->server == server) { | |
700 | ses->status = CifsExiting; | |
701 | ses->server = NULL; | |
702 | } | |
703 | } | |
704 | read_unlock(&GlobalSMBSeslock); | |
705 | } else { | |
31ca3bc3 SF |
706 | /* although we can not zero the server struct pointer yet, |
707 | since there are active requests which may depnd on them, | |
708 | mark the corresponding SMB sessions as exiting too */ | |
709 | list_for_each(tmp, &GlobalSMBSessionList) { | |
710 | ses = list_entry(tmp, struct cifsSesInfo, | |
711 | cifsSessionList); | |
26f57364 | 712 | if (ses->server == server) |
31ca3bc3 | 713 | ses->status = CifsExiting; |
31ca3bc3 SF |
714 | } |
715 | ||
1da177e4 LT |
716 | spin_lock(&GlobalMid_Lock); |
717 | list_for_each(tmp, &server->pending_mid_q) { | |
718 | mid_entry = list_entry(tmp, struct mid_q_entry, qhead); | |
719 | if (mid_entry->midState == MID_REQUEST_SUBMITTED) { | |
50c2f753 SF |
720 | cFYI(1, ("Clearing Mid 0x%x - waking up ", |
721 | mid_entry->mid)); | |
1da177e4 | 722 | task_to_wake = mid_entry->tsk; |
26f57364 | 723 | if (task_to_wake) |
1da177e4 | 724 | wake_up_process(task_to_wake); |
1da177e4 LT |
725 | } |
726 | } | |
727 | spin_unlock(&GlobalMid_Lock); | |
728 | read_unlock(&GlobalSMBSeslock); | |
1da177e4 | 729 | /* 1/8th of sec is more than enough time for them to exit */ |
b8643e1b | 730 | msleep(125); |
1da177e4 LT |
731 | } |
732 | ||
f191401f | 733 | if (!list_empty(&server->pending_mid_q)) { |
50c2f753 | 734 | /* mpx threads have not exited yet give them |
1da177e4 | 735 | at least the smb send timeout time for long ops */ |
31ca3bc3 SF |
736 | /* due to delays on oplock break requests, we need |
737 | to wait at least 45 seconds before giving up | |
738 | on a request getting a response and going ahead | |
739 | and killing cifsd */ | |
1da177e4 | 740 | cFYI(1, ("Wait for exit from demultiplex thread")); |
31ca3bc3 | 741 | msleep(46000); |
1da177e4 LT |
742 | /* if threads still have not exited they are probably never |
743 | coming home not much else we can do but free the memory */ | |
744 | } | |
1da177e4 LT |
745 | |
746 | write_lock(&GlobalSMBSeslock); | |
747 | atomic_dec(&tcpSesAllocCount); | |
748 | length = tcpSesAllocCount.counter; | |
31ca3bc3 SF |
749 | |
750 | /* last chance to mark ses pointers invalid | |
751 | if there are any pointing to this (e.g | |
50c2f753 | 752 | if a crazy root user tried to kill cifsd |
31ca3bc3 SF |
753 | kernel thread explicitly this might happen) */ |
754 | list_for_each(tmp, &GlobalSMBSessionList) { | |
755 | ses = list_entry(tmp, struct cifsSesInfo, | |
756 | cifsSessionList); | |
26f57364 | 757 | if (ses->server == server) |
31ca3bc3 | 758 | ses->server = NULL; |
31ca3bc3 | 759 | } |
1da177e4 | 760 | write_unlock(&GlobalSMBSeslock); |
31ca3bc3 | 761 | |
c359cf3c | 762 | kfree(server->hostname); |
31ca3bc3 | 763 | kfree(server); |
26f57364 SF |
764 | if (length > 0) |
765 | mempool_resize(cifs_req_poolp, length + cifs_min_rcv, | |
766 | GFP_KERNEL); | |
50c2f753 | 767 | |
1da177e4 LT |
768 | return 0; |
769 | } | |
770 | ||
c359cf3c JL |
771 | /* extract the host portion of the UNC string */ |
772 | static char * | |
773 | extract_hostname(const char *unc) | |
774 | { | |
775 | const char *src; | |
776 | char *dst, *delim; | |
777 | unsigned int len; | |
778 | ||
779 | /* skip double chars at beginning of string */ | |
780 | /* BB: check validity of these bytes? */ | |
781 | src = unc + 2; | |
782 | ||
783 | /* delimiter between hostname and sharename is always '\\' now */ | |
784 | delim = strchr(src, '\\'); | |
785 | if (!delim) | |
786 | return ERR_PTR(-EINVAL); | |
787 | ||
788 | len = delim - src; | |
789 | dst = kmalloc((len + 1), GFP_KERNEL); | |
790 | if (dst == NULL) | |
791 | return ERR_PTR(-ENOMEM); | |
792 | ||
793 | memcpy(dst, src, len); | |
794 | dst[len] = '\0'; | |
795 | ||
796 | return dst; | |
797 | } | |
798 | ||
1da177e4 | 799 | static int |
50c2f753 SF |
800 | cifs_parse_mount_options(char *options, const char *devname, |
801 | struct smb_vol *vol) | |
1da177e4 LT |
802 | { |
803 | char *value; | |
804 | char *data; | |
805 | unsigned int temp_len, i, j; | |
806 | char separator[2]; | |
807 | ||
808 | separator[0] = ','; | |
50c2f753 | 809 | separator[1] = 0; |
1da177e4 | 810 | |
12e36b2f | 811 | if (Local_System_Name[0] != 0) |
50c2f753 | 812 | memcpy(vol->source_rfc1001_name, Local_System_Name, 15); |
2cd646a2 | 813 | else { |
12e36b2f | 814 | char *nodename = utsname()->nodename; |
50c2f753 SF |
815 | int n = strnlen(nodename, 15); |
816 | memset(vol->source_rfc1001_name, 0x20, 15); | |
817 | for (i = 0; i < n; i++) { | |
2cd646a2 SF |
818 | /* does not have to be perfect mapping since field is |
819 | informational, only used for servers that do not support | |
820 | port 445 and it can be overridden at mount time */ | |
12e36b2f | 821 | vol->source_rfc1001_name[i] = toupper(nodename[i]); |
2cd646a2 | 822 | } |
1da177e4 LT |
823 | } |
824 | vol->source_rfc1001_name[15] = 0; | |
a10faeb2 SF |
825 | /* null target name indicates to use *SMBSERVR default called name |
826 | if we end up sending RFC1001 session initialize */ | |
827 | vol->target_rfc1001_name[0] = 0; | |
1da177e4 LT |
828 | vol->linux_uid = current->uid; /* current->euid instead? */ |
829 | vol->linux_gid = current->gid; | |
830 | vol->dir_mode = S_IRWXUGO; | |
831 | /* 2767 perms indicate mandatory locking support */ | |
7505e052 | 832 | vol->file_mode = (S_IRWXUGO | S_ISGID) & (~S_IXGRP); |
1da177e4 LT |
833 | |
834 | /* vol->retry default is 0 (i.e. "soft" limited retry not hard retry) */ | |
4b18f2a9 | 835 | vol->rw = true; |
ac67055e JA |
836 | /* default is always to request posix paths. */ |
837 | vol->posix_paths = 1; | |
838 | ||
1da177e4 LT |
839 | if (!options) |
840 | return 1; | |
841 | ||
50c2f753 | 842 | if (strncmp(options, "sep=", 4) == 0) { |
fb8c4b14 | 843 | if (options[4] != 0) { |
1da177e4 LT |
844 | separator[0] = options[4]; |
845 | options += 5; | |
846 | } else { | |
467a8f8d | 847 | cFYI(1, ("Null separator not allowed")); |
1da177e4 LT |
848 | } |
849 | } | |
50c2f753 | 850 | |
1da177e4 LT |
851 | while ((data = strsep(&options, separator)) != NULL) { |
852 | if (!*data) | |
853 | continue; | |
854 | if ((value = strchr(data, '=')) != NULL) | |
855 | *value++ = '\0'; | |
856 | ||
50c2f753 SF |
857 | /* Have to parse this before we parse for "user" */ |
858 | if (strnicmp(data, "user_xattr", 10) == 0) { | |
1da177e4 | 859 | vol->no_xattr = 0; |
50c2f753 | 860 | } else if (strnicmp(data, "nouser_xattr", 12) == 0) { |
1da177e4 LT |
861 | vol->no_xattr = 1; |
862 | } else if (strnicmp(data, "user", 4) == 0) { | |
4b952a9b | 863 | if (!value) { |
1da177e4 LT |
864 | printk(KERN_WARNING |
865 | "CIFS: invalid or missing username\n"); | |
866 | return 1; /* needs_arg; */ | |
fb8c4b14 | 867 | } else if (!*value) { |
4b952a9b SF |
868 | /* null user, ie anonymous, authentication */ |
869 | vol->nullauth = 1; | |
1da177e4 LT |
870 | } |
871 | if (strnlen(value, 200) < 200) { | |
872 | vol->username = value; | |
873 | } else { | |
874 | printk(KERN_WARNING "CIFS: username too long\n"); | |
875 | return 1; | |
876 | } | |
877 | } else if (strnicmp(data, "pass", 4) == 0) { | |
878 | if (!value) { | |
879 | vol->password = NULL; | |
880 | continue; | |
fb8c4b14 | 881 | } else if (value[0] == 0) { |
1da177e4 LT |
882 | /* check if string begins with double comma |
883 | since that would mean the password really | |
884 | does start with a comma, and would not | |
885 | indicate an empty string */ | |
fb8c4b14 | 886 | if (value[1] != separator[0]) { |
1da177e4 LT |
887 | vol->password = NULL; |
888 | continue; | |
889 | } | |
890 | } | |
891 | temp_len = strlen(value); | |
892 | /* removed password length check, NTLM passwords | |
893 | can be arbitrarily long */ | |
894 | ||
50c2f753 | 895 | /* if comma in password, the string will be |
1da177e4 LT |
896 | prematurely null terminated. Commas in password are |
897 | specified across the cifs mount interface by a double | |
898 | comma ie ,, and a comma used as in other cases ie ',' | |
899 | as a parameter delimiter/separator is single and due | |
900 | to the strsep above is temporarily zeroed. */ | |
901 | ||
902 | /* NB: password legally can have multiple commas and | |
903 | the only illegal character in a password is null */ | |
904 | ||
50c2f753 | 905 | if ((value[temp_len] == 0) && |
09d1db5c | 906 | (value[temp_len+1] == separator[0])) { |
1da177e4 LT |
907 | /* reinsert comma */ |
908 | value[temp_len] = separator[0]; | |
50c2f753 SF |
909 | temp_len += 2; /* move after second comma */ |
910 | while (value[temp_len] != 0) { | |
1da177e4 | 911 | if (value[temp_len] == separator[0]) { |
50c2f753 | 912 | if (value[temp_len+1] == |
09d1db5c SF |
913 | separator[0]) { |
914 | /* skip second comma */ | |
915 | temp_len++; | |
50c2f753 | 916 | } else { |
1da177e4 LT |
917 | /* single comma indicating start |
918 | of next parm */ | |
919 | break; | |
920 | } | |
921 | } | |
922 | temp_len++; | |
923 | } | |
fb8c4b14 | 924 | if (value[temp_len] == 0) { |
1da177e4 LT |
925 | options = NULL; |
926 | } else { | |
927 | value[temp_len] = 0; | |
928 | /* point option to start of next parm */ | |
929 | options = value + temp_len + 1; | |
930 | } | |
50c2f753 | 931 | /* go from value to value + temp_len condensing |
1da177e4 LT |
932 | double commas to singles. Note that this ends up |
933 | allocating a few bytes too many, which is ok */ | |
e915fc49 | 934 | vol->password = kzalloc(temp_len, GFP_KERNEL); |
fb8c4b14 | 935 | if (vol->password == NULL) { |
50c2f753 SF |
936 | printk(KERN_WARNING "CIFS: no memory " |
937 | "for password\n"); | |
433dc24f SF |
938 | return 1; |
939 | } | |
50c2f753 | 940 | for (i = 0, j = 0; i < temp_len; i++, j++) { |
1da177e4 | 941 | vol->password[j] = value[i]; |
fb8c4b14 | 942 | if (value[i] == separator[0] |
09d1db5c | 943 | && value[i+1] == separator[0]) { |
1da177e4 LT |
944 | /* skip second comma */ |
945 | i++; | |
946 | } | |
947 | } | |
948 | vol->password[j] = 0; | |
949 | } else { | |
e915fc49 | 950 | vol->password = kzalloc(temp_len+1, GFP_KERNEL); |
fb8c4b14 | 951 | if (vol->password == NULL) { |
50c2f753 SF |
952 | printk(KERN_WARNING "CIFS: no memory " |
953 | "for password\n"); | |
433dc24f SF |
954 | return 1; |
955 | } | |
1da177e4 LT |
956 | strcpy(vol->password, value); |
957 | } | |
958 | } else if (strnicmp(data, "ip", 2) == 0) { | |
959 | if (!value || !*value) { | |
960 | vol->UNCip = NULL; | |
961 | } else if (strnlen(value, 35) < 35) { | |
962 | vol->UNCip = value; | |
963 | } else { | |
50c2f753 SF |
964 | printk(KERN_WARNING "CIFS: ip address " |
965 | "too long\n"); | |
1da177e4 LT |
966 | return 1; |
967 | } | |
50c2f753 SF |
968 | } else if (strnicmp(data, "sec", 3) == 0) { |
969 | if (!value || !*value) { | |
970 | cERROR(1, ("no security value specified")); | |
971 | continue; | |
972 | } else if (strnicmp(value, "krb5i", 5) == 0) { | |
973 | vol->secFlg |= CIFSSEC_MAY_KRB5 | | |
189acaae | 974 | CIFSSEC_MUST_SIGN; |
bf820679 | 975 | } else if (strnicmp(value, "krb5p", 5) == 0) { |
50c2f753 SF |
976 | /* vol->secFlg |= CIFSSEC_MUST_SEAL | |
977 | CIFSSEC_MAY_KRB5; */ | |
978 | cERROR(1, ("Krb5 cifs privacy not supported")); | |
bf820679 SF |
979 | return 1; |
980 | } else if (strnicmp(value, "krb5", 4) == 0) { | |
750d1151 | 981 | vol->secFlg |= CIFSSEC_MAY_KRB5; |
bf820679 | 982 | } else if (strnicmp(value, "ntlmv2i", 7) == 0) { |
750d1151 | 983 | vol->secFlg |= CIFSSEC_MAY_NTLMV2 | |
189acaae | 984 | CIFSSEC_MUST_SIGN; |
bf820679 | 985 | } else if (strnicmp(value, "ntlmv2", 6) == 0) { |
750d1151 | 986 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
bf820679 | 987 | } else if (strnicmp(value, "ntlmi", 5) == 0) { |
750d1151 | 988 | vol->secFlg |= CIFSSEC_MAY_NTLM | |
189acaae | 989 | CIFSSEC_MUST_SIGN; |
bf820679 SF |
990 | } else if (strnicmp(value, "ntlm", 4) == 0) { |
991 | /* ntlm is default so can be turned off too */ | |
750d1151 | 992 | vol->secFlg |= CIFSSEC_MAY_NTLM; |
bf820679 | 993 | } else if (strnicmp(value, "nontlm", 6) == 0) { |
189acaae | 994 | /* BB is there a better way to do this? */ |
750d1151 | 995 | vol->secFlg |= CIFSSEC_MAY_NTLMV2; |
189acaae SF |
996 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
997 | } else if (strnicmp(value, "lanman", 6) == 0) { | |
50c2f753 | 998 | vol->secFlg |= CIFSSEC_MAY_LANMAN; |
189acaae | 999 | #endif |
bf820679 | 1000 | } else if (strnicmp(value, "none", 4) == 0) { |
189acaae | 1001 | vol->nullauth = 1; |
50c2f753 SF |
1002 | } else { |
1003 | cERROR(1, ("bad security option: %s", value)); | |
1004 | return 1; | |
1005 | } | |
1da177e4 LT |
1006 | } else if ((strnicmp(data, "unc", 3) == 0) |
1007 | || (strnicmp(data, "target", 6) == 0) | |
1008 | || (strnicmp(data, "path", 4) == 0)) { | |
1009 | if (!value || !*value) { | |
50c2f753 SF |
1010 | printk(KERN_WARNING "CIFS: invalid path to " |
1011 | "network resource\n"); | |
1da177e4 LT |
1012 | return 1; /* needs_arg; */ |
1013 | } | |
1014 | if ((temp_len = strnlen(value, 300)) < 300) { | |
50c2f753 | 1015 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1016 | if (vol->UNC == NULL) |
1da177e4 | 1017 | return 1; |
50c2f753 | 1018 | strcpy(vol->UNC, value); |
1da177e4 LT |
1019 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1020 | vol->UNC[0] = '\\'; | |
1021 | vol->UNC[1] = '\\'; | |
50c2f753 | 1022 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { |
1da177e4 | 1023 | printk(KERN_WARNING |
50c2f753 SF |
1024 | "CIFS: UNC Path does not begin " |
1025 | "with // or \\\\ \n"); | |
1da177e4 LT |
1026 | return 1; |
1027 | } | |
1028 | } else { | |
1029 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1030 | return 1; | |
1031 | } | |
1032 | } else if ((strnicmp(data, "domain", 3) == 0) | |
1033 | || (strnicmp(data, "workgroup", 5) == 0)) { | |
1034 | if (!value || !*value) { | |
1035 | printk(KERN_WARNING "CIFS: invalid domain name\n"); | |
1036 | return 1; /* needs_arg; */ | |
1037 | } | |
1038 | /* BB are there cases in which a comma can be valid in | |
1039 | a domain name and need special handling? */ | |
3979877e | 1040 | if (strnlen(value, 256) < 256) { |
1da177e4 LT |
1041 | vol->domainname = value; |
1042 | cFYI(1, ("Domain name set")); | |
1043 | } else { | |
50c2f753 SF |
1044 | printk(KERN_WARNING "CIFS: domain name too " |
1045 | "long\n"); | |
1da177e4 LT |
1046 | return 1; |
1047 | } | |
50c2f753 SF |
1048 | } else if (strnicmp(data, "prefixpath", 10) == 0) { |
1049 | if (!value || !*value) { | |
1050 | printk(KERN_WARNING | |
1051 | "CIFS: invalid path prefix\n"); | |
1052 | return 1; /* needs_argument */ | |
1053 | } | |
1054 | if ((temp_len = strnlen(value, 1024)) < 1024) { | |
4523cc30 | 1055 | if (value[0] != '/') |
2fe87f02 | 1056 | temp_len++; /* missing leading slash */ |
50c2f753 SF |
1057 | vol->prepath = kmalloc(temp_len+1, GFP_KERNEL); |
1058 | if (vol->prepath == NULL) | |
1059 | return 1; | |
4523cc30 | 1060 | if (value[0] != '/') { |
2fe87f02 | 1061 | vol->prepath[0] = '/'; |
50c2f753 | 1062 | strcpy(vol->prepath+1, value); |
2fe87f02 | 1063 | } else |
50c2f753 SF |
1064 | strcpy(vol->prepath, value); |
1065 | cFYI(1, ("prefix path %s", vol->prepath)); | |
1066 | } else { | |
1067 | printk(KERN_WARNING "CIFS: prefix too long\n"); | |
1068 | return 1; | |
1069 | } | |
1da177e4 LT |
1070 | } else if (strnicmp(data, "iocharset", 9) == 0) { |
1071 | if (!value || !*value) { | |
63135e08 SF |
1072 | printk(KERN_WARNING "CIFS: invalid iocharset " |
1073 | "specified\n"); | |
1da177e4 LT |
1074 | return 1; /* needs_arg; */ |
1075 | } | |
1076 | if (strnlen(value, 65) < 65) { | |
50c2f753 | 1077 | if (strnicmp(value, "default", 7)) |
1da177e4 | 1078 | vol->iocharset = value; |
50c2f753 SF |
1079 | /* if iocharset not set then load_nls_default |
1080 | is used by caller */ | |
1081 | cFYI(1, ("iocharset set to %s", value)); | |
1da177e4 | 1082 | } else { |
63135e08 SF |
1083 | printk(KERN_WARNING "CIFS: iocharset name " |
1084 | "too long.\n"); | |
1da177e4 LT |
1085 | return 1; |
1086 | } | |
1087 | } else if (strnicmp(data, "uid", 3) == 0) { | |
1088 | if (value && *value) { | |
1089 | vol->linux_uid = | |
1090 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1091 | vol->override_uid = 1; |
1da177e4 LT |
1092 | } |
1093 | } else if (strnicmp(data, "gid", 3) == 0) { | |
1094 | if (value && *value) { | |
1095 | vol->linux_gid = | |
1096 | simple_strtoul(value, &value, 0); | |
4523cc30 | 1097 | vol->override_gid = 1; |
1da177e4 LT |
1098 | } |
1099 | } else if (strnicmp(data, "file_mode", 4) == 0) { | |
1100 | if (value && *value) { | |
1101 | vol->file_mode = | |
1102 | simple_strtoul(value, &value, 0); | |
1103 | } | |
1104 | } else if (strnicmp(data, "dir_mode", 4) == 0) { | |
1105 | if (value && *value) { | |
1106 | vol->dir_mode = | |
1107 | simple_strtoul(value, &value, 0); | |
1108 | } | |
1109 | } else if (strnicmp(data, "dirmode", 4) == 0) { | |
1110 | if (value && *value) { | |
1111 | vol->dir_mode = | |
1112 | simple_strtoul(value, &value, 0); | |
1113 | } | |
1114 | } else if (strnicmp(data, "port", 4) == 0) { | |
1115 | if (value && *value) { | |
1116 | vol->port = | |
1117 | simple_strtoul(value, &value, 0); | |
1118 | } | |
1119 | } else if (strnicmp(data, "rsize", 5) == 0) { | |
1120 | if (value && *value) { | |
1121 | vol->rsize = | |
1122 | simple_strtoul(value, &value, 0); | |
1123 | } | |
1124 | } else if (strnicmp(data, "wsize", 5) == 0) { | |
1125 | if (value && *value) { | |
1126 | vol->wsize = | |
1127 | simple_strtoul(value, &value, 0); | |
1128 | } | |
1129 | } else if (strnicmp(data, "sockopt", 5) == 0) { | |
1130 | if (value && *value) { | |
1131 | vol->sockopt = | |
1132 | simple_strtoul(value, &value, 0); | |
1133 | } | |
1134 | } else if (strnicmp(data, "netbiosname", 4) == 0) { | |
1135 | if (!value || !*value || (*value == ' ')) { | |
63135e08 | 1136 | cFYI(1, ("invalid (empty) netbiosname")); |
1da177e4 | 1137 | } else { |
50c2f753 SF |
1138 | memset(vol->source_rfc1001_name, 0x20, 15); |
1139 | for (i = 0; i < 15; i++) { | |
1140 | /* BB are there cases in which a comma can be | |
1da177e4 LT |
1141 | valid in this workstation netbios name (and need |
1142 | special handling)? */ | |
1143 | ||
1144 | /* We do not uppercase netbiosname for user */ | |
50c2f753 | 1145 | if (value[i] == 0) |
1da177e4 | 1146 | break; |
50c2f753 SF |
1147 | else |
1148 | vol->source_rfc1001_name[i] = | |
1149 | value[i]; | |
1da177e4 LT |
1150 | } |
1151 | /* The string has 16th byte zero still from | |
1152 | set at top of the function */ | |
50c2f753 SF |
1153 | if ((i == 15) && (value[i] != 0)) |
1154 | printk(KERN_WARNING "CIFS: netbiosname" | |
1155 | " longer than 15 truncated.\n"); | |
a10faeb2 SF |
1156 | } |
1157 | } else if (strnicmp(data, "servern", 7) == 0) { | |
1158 | /* servernetbiosname specified override *SMBSERVER */ | |
1159 | if (!value || !*value || (*value == ' ')) { | |
467a8f8d | 1160 | cFYI(1, ("empty server netbiosname specified")); |
a10faeb2 SF |
1161 | } else { |
1162 | /* last byte, type, is 0x20 for servr type */ | |
50c2f753 | 1163 | memset(vol->target_rfc1001_name, 0x20, 16); |
a10faeb2 | 1164 | |
50c2f753 | 1165 | for (i = 0; i < 15; i++) { |
a10faeb2 | 1166 | /* BB are there cases in which a comma can be |
50c2f753 SF |
1167 | valid in this workstation netbios name |
1168 | (and need special handling)? */ | |
a10faeb2 | 1169 | |
50c2f753 SF |
1170 | /* user or mount helper must uppercase |
1171 | the netbiosname */ | |
1172 | if (value[i] == 0) | |
a10faeb2 SF |
1173 | break; |
1174 | else | |
50c2f753 SF |
1175 | vol->target_rfc1001_name[i] = |
1176 | value[i]; | |
a10faeb2 SF |
1177 | } |
1178 | /* The string has 16th byte zero still from | |
1179 | set at top of the function */ | |
50c2f753 SF |
1180 | if ((i == 15) && (value[i] != 0)) |
1181 | printk(KERN_WARNING "CIFS: server net" | |
1182 | "biosname longer than 15 truncated.\n"); | |
1da177e4 LT |
1183 | } |
1184 | } else if (strnicmp(data, "credentials", 4) == 0) { | |
1185 | /* ignore */ | |
1186 | } else if (strnicmp(data, "version", 3) == 0) { | |
1187 | /* ignore */ | |
50c2f753 | 1188 | } else if (strnicmp(data, "guest", 5) == 0) { |
1da177e4 LT |
1189 | /* ignore */ |
1190 | } else if (strnicmp(data, "rw", 2) == 0) { | |
4b18f2a9 | 1191 | vol->rw = true; |
1da177e4 LT |
1192 | } else if ((strnicmp(data, "suid", 4) == 0) || |
1193 | (strnicmp(data, "nosuid", 6) == 0) || | |
1194 | (strnicmp(data, "exec", 4) == 0) || | |
1195 | (strnicmp(data, "noexec", 6) == 0) || | |
1196 | (strnicmp(data, "nodev", 5) == 0) || | |
1197 | (strnicmp(data, "noauto", 6) == 0) || | |
1198 | (strnicmp(data, "dev", 3) == 0)) { | |
1199 | /* The mount tool or mount.cifs helper (if present) | |
50c2f753 SF |
1200 | uses these opts to set flags, and the flags are read |
1201 | by the kernel vfs layer before we get here (ie | |
1202 | before read super) so there is no point trying to | |
1203 | parse these options again and set anything and it | |
1204 | is ok to just ignore them */ | |
1da177e4 LT |
1205 | continue; |
1206 | } else if (strnicmp(data, "ro", 2) == 0) { | |
4b18f2a9 | 1207 | vol->rw = false; |
1da177e4 LT |
1208 | } else if (strnicmp(data, "hard", 4) == 0) { |
1209 | vol->retry = 1; | |
1210 | } else if (strnicmp(data, "soft", 4) == 0) { | |
1211 | vol->retry = 0; | |
1212 | } else if (strnicmp(data, "perm", 4) == 0) { | |
1213 | vol->noperm = 0; | |
1214 | } else if (strnicmp(data, "noperm", 6) == 0) { | |
1215 | vol->noperm = 1; | |
6a0b4824 SF |
1216 | } else if (strnicmp(data, "mapchars", 8) == 0) { |
1217 | vol->remap = 1; | |
1218 | } else if (strnicmp(data, "nomapchars", 10) == 0) { | |
1219 | vol->remap = 0; | |
50c2f753 SF |
1220 | } else if (strnicmp(data, "sfu", 3) == 0) { |
1221 | vol->sfu_emul = 1; | |
1222 | } else if (strnicmp(data, "nosfu", 5) == 0) { | |
1223 | vol->sfu_emul = 0; | |
ac67055e JA |
1224 | } else if (strnicmp(data, "posixpaths", 10) == 0) { |
1225 | vol->posix_paths = 1; | |
1226 | } else if (strnicmp(data, "noposixpaths", 12) == 0) { | |
1227 | vol->posix_paths = 0; | |
c18c842b SF |
1228 | } else if (strnicmp(data, "nounix", 6) == 0) { |
1229 | vol->no_linux_ext = 1; | |
1230 | } else if (strnicmp(data, "nolinux", 7) == 0) { | |
1231 | vol->no_linux_ext = 1; | |
50c2f753 | 1232 | } else if ((strnicmp(data, "nocase", 6) == 0) || |
a10faeb2 | 1233 | (strnicmp(data, "ignorecase", 10) == 0)) { |
50c2f753 | 1234 | vol->nocase = 1; |
c46fa8ac SF |
1235 | } else if (strnicmp(data, "brl", 3) == 0) { |
1236 | vol->nobrl = 0; | |
50c2f753 | 1237 | } else if ((strnicmp(data, "nobrl", 5) == 0) || |
1c955187 | 1238 | (strnicmp(data, "nolock", 6) == 0)) { |
c46fa8ac | 1239 | vol->nobrl = 1; |
d3485d37 SF |
1240 | /* turn off mandatory locking in mode |
1241 | if remote locking is turned off since the | |
1242 | local vfs will do advisory */ | |
50c2f753 SF |
1243 | if (vol->file_mode == |
1244 | (S_IALLUGO & ~(S_ISUID | S_IXGRP))) | |
d3485d37 | 1245 | vol->file_mode = S_IALLUGO; |
1da177e4 LT |
1246 | } else if (strnicmp(data, "setuids", 7) == 0) { |
1247 | vol->setuids = 1; | |
1248 | } else if (strnicmp(data, "nosetuids", 9) == 0) { | |
1249 | vol->setuids = 0; | |
d0a9c078 JL |
1250 | } else if (strnicmp(data, "dynperm", 7) == 0) { |
1251 | vol->dynperm = true; | |
1252 | } else if (strnicmp(data, "nodynperm", 9) == 0) { | |
1253 | vol->dynperm = false; | |
1da177e4 LT |
1254 | } else if (strnicmp(data, "nohard", 6) == 0) { |
1255 | vol->retry = 0; | |
1256 | } else if (strnicmp(data, "nosoft", 6) == 0) { | |
1257 | vol->retry = 1; | |
1258 | } else if (strnicmp(data, "nointr", 6) == 0) { | |
1259 | vol->intr = 0; | |
1260 | } else if (strnicmp(data, "intr", 4) == 0) { | |
1261 | vol->intr = 1; | |
50c2f753 | 1262 | } else if (strnicmp(data, "serverino", 7) == 0) { |
1da177e4 | 1263 | vol->server_ino = 1; |
50c2f753 | 1264 | } else if (strnicmp(data, "noserverino", 9) == 0) { |
1da177e4 | 1265 | vol->server_ino = 0; |
50c2f753 | 1266 | } else if (strnicmp(data, "cifsacl", 7) == 0) { |
0a4b92c0 SF |
1267 | vol->cifs_acl = 1; |
1268 | } else if (strnicmp(data, "nocifsacl", 9) == 0) { | |
1269 | vol->cifs_acl = 0; | |
50c2f753 | 1270 | } else if (strnicmp(data, "acl", 3) == 0) { |
1da177e4 | 1271 | vol->no_psx_acl = 0; |
50c2f753 | 1272 | } else if (strnicmp(data, "noacl", 5) == 0) { |
1da177e4 | 1273 | vol->no_psx_acl = 1; |
50c2f753 | 1274 | } else if (strnicmp(data, "sign", 4) == 0) { |
750d1151 SF |
1275 | vol->secFlg |= CIFSSEC_MUST_SIGN; |
1276 | /* } else if (strnicmp(data, "seal",4) == 0) { | |
1277 | vol->secFlg |= CIFSSEC_MUST_SEAL; */ | |
50c2f753 | 1278 | } else if (strnicmp(data, "direct", 6) == 0) { |
1da177e4 | 1279 | vol->direct_io = 1; |
50c2f753 | 1280 | } else if (strnicmp(data, "forcedirectio", 13) == 0) { |
1da177e4 | 1281 | vol->direct_io = 1; |
50c2f753 | 1282 | } else if (strnicmp(data, "in6_addr", 8) == 0) { |
1da177e4 LT |
1283 | if (!value || !*value) { |
1284 | vol->in6_addr = NULL; | |
1285 | } else if (strnlen(value, 49) == 48) { | |
1286 | vol->in6_addr = value; | |
1287 | } else { | |
50c2f753 SF |
1288 | printk(KERN_WARNING "CIFS: ip v6 address not " |
1289 | "48 characters long\n"); | |
1da177e4 LT |
1290 | return 1; |
1291 | } | |
1292 | } else if (strnicmp(data, "noac", 4) == 0) { | |
50c2f753 SF |
1293 | printk(KERN_WARNING "CIFS: Mount option noac not " |
1294 | "supported. Instead set " | |
1295 | "/proc/fs/cifs/LookupCacheEnabled to 0\n"); | |
1da177e4 | 1296 | } else |
50c2f753 SF |
1297 | printk(KERN_WARNING "CIFS: Unknown mount option %s\n", |
1298 | data); | |
1da177e4 LT |
1299 | } |
1300 | if (vol->UNC == NULL) { | |
4523cc30 | 1301 | if (devname == NULL) { |
50c2f753 SF |
1302 | printk(KERN_WARNING "CIFS: Missing UNC name for mount " |
1303 | "target\n"); | |
1da177e4 LT |
1304 | return 1; |
1305 | } | |
1306 | if ((temp_len = strnlen(devname, 300)) < 300) { | |
50c2f753 | 1307 | vol->UNC = kmalloc(temp_len+1, GFP_KERNEL); |
4523cc30 | 1308 | if (vol->UNC == NULL) |
1da177e4 | 1309 | return 1; |
50c2f753 | 1310 | strcpy(vol->UNC, devname); |
1da177e4 LT |
1311 | if (strncmp(vol->UNC, "//", 2) == 0) { |
1312 | vol->UNC[0] = '\\'; | |
1313 | vol->UNC[1] = '\\'; | |
1314 | } else if (strncmp(vol->UNC, "\\\\", 2) != 0) { | |
50c2f753 SF |
1315 | printk(KERN_WARNING "CIFS: UNC Path does not " |
1316 | "begin with // or \\\\ \n"); | |
1da177e4 LT |
1317 | return 1; |
1318 | } | |
7c5e628f IM |
1319 | value = strpbrk(vol->UNC+2, "/\\"); |
1320 | if (value) | |
1321 | *value = '\\'; | |
1da177e4 LT |
1322 | } else { |
1323 | printk(KERN_WARNING "CIFS: UNC name too long\n"); | |
1324 | return 1; | |
1325 | } | |
1326 | } | |
fb8c4b14 | 1327 | if (vol->UNCip == NULL) |
1da177e4 LT |
1328 | vol->UNCip = &vol->UNC[2]; |
1329 | ||
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | static struct cifsSesInfo * | |
50c2f753 | 1334 | cifs_find_tcp_session(struct in_addr *target_ip_addr, |
1b20d672 CG |
1335 | struct in6_addr *target_ip6_addr, |
1336 | char *userName, struct TCP_Server_Info **psrvTcp) | |
1da177e4 LT |
1337 | { |
1338 | struct list_head *tmp; | |
1339 | struct cifsSesInfo *ses; | |
1b20d672 | 1340 | |
1da177e4 | 1341 | *psrvTcp = NULL; |
1da177e4 | 1342 | |
1b20d672 | 1343 | read_lock(&GlobalSMBSeslock); |
1da177e4 LT |
1344 | list_for_each(tmp, &GlobalSMBSessionList) { |
1345 | ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList); | |
1b20d672 CG |
1346 | if (!ses->server) |
1347 | continue; | |
1348 | ||
1349 | if (target_ip_addr && | |
1350 | ses->server->addr.sockAddr.sin_addr.s_addr != target_ip_addr->s_addr) | |
1351 | continue; | |
1352 | else if (target_ip6_addr && | |
1353 | memcmp(&ses->server->addr.sockAddr6.sin6_addr, | |
1354 | target_ip6_addr, sizeof(*target_ip6_addr))) | |
1355 | continue; | |
02eadeff | 1356 | /* BB lock server and tcp session; increment use count here?? */ |
1b20d672 CG |
1357 | |
1358 | /* found a match on the TCP session */ | |
1359 | *psrvTcp = ses->server; | |
1360 | ||
1361 | /* BB check if reconnection needed */ | |
1362 | if (strncmp(ses->userName, userName, MAX_USERNAME_SIZE) == 0) { | |
1363 | read_unlock(&GlobalSMBSeslock); | |
1364 | /* Found exact match on both TCP and | |
1365 | SMB sessions */ | |
1366 | return ses; | |
1da177e4 LT |
1367 | } |
1368 | /* else tcp and smb sessions need reconnection */ | |
1369 | } | |
1370 | read_unlock(&GlobalSMBSeslock); | |
1b20d672 | 1371 | |
1da177e4 LT |
1372 | return NULL; |
1373 | } | |
1374 | ||
1375 | static struct cifsTconInfo * | |
1376 | find_unc(__be32 new_target_ip_addr, char *uncName, char *userName) | |
1377 | { | |
1378 | struct list_head *tmp; | |
1379 | struct cifsTconInfo *tcon; | |
dea570e0 | 1380 | __be32 old_ip; |
1da177e4 LT |
1381 | |
1382 | read_lock(&GlobalSMBSeslock); | |
dea570e0 | 1383 | |
1da177e4 | 1384 | list_for_each(tmp, &GlobalTreeConnectionList) { |
e466e487 | 1385 | cFYI(1, ("Next tcon")); |
1da177e4 | 1386 | tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList); |
dea570e0 SF |
1387 | if (!tcon->ses || !tcon->ses->server) |
1388 | continue; | |
1389 | ||
1390 | old_ip = tcon->ses->server->addr.sockAddr.sin_addr.s_addr; | |
1391 | cFYI(1, ("old ip addr: %x == new ip %x ?", | |
1392 | old_ip, new_target_ip_addr)); | |
1393 | ||
1394 | if (old_ip != new_target_ip_addr) | |
1395 | continue; | |
1396 | ||
1397 | /* BB lock tcon, server, tcp session and increment use count? */ | |
1398 | /* found a match on the TCP session */ | |
1399 | /* BB check if reconnection needed */ | |
1400 | cFYI(1, ("IP match, old UNC: %s new: %s", | |
1401 | tcon->treeName, uncName)); | |
1402 | ||
1403 | if (strncmp(tcon->treeName, uncName, MAX_TREE_SIZE)) | |
1404 | continue; | |
1405 | ||
1406 | cFYI(1, ("and old usr: %s new: %s", | |
1407 | tcon->treeName, uncName)); | |
1408 | ||
1409 | if (strncmp(tcon->ses->userName, userName, MAX_USERNAME_SIZE)) | |
1410 | continue; | |
1411 | ||
1412 | /* matched smb session (user name) */ | |
1413 | read_unlock(&GlobalSMBSeslock); | |
1414 | return tcon; | |
1da177e4 | 1415 | } |
dea570e0 | 1416 | |
1da177e4 LT |
1417 | read_unlock(&GlobalSMBSeslock); |
1418 | return NULL; | |
1419 | } | |
1420 | ||
1da177e4 | 1421 | int |
50c2f753 SF |
1422 | get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path, |
1423 | const struct nls_table *nls_codepage, unsigned int *pnum_referrals, | |
366781c1 | 1424 | struct dfs_info3_param **preferrals, int remap) |
1da177e4 LT |
1425 | { |
1426 | char *temp_unc; | |
1427 | int rc = 0; | |
1428 | ||
1429 | *pnum_referrals = 0; | |
366781c1 | 1430 | *preferrals = NULL; |
1da177e4 LT |
1431 | |
1432 | if (pSesInfo->ipc_tid == 0) { | |
1433 | temp_unc = kmalloc(2 /* for slashes */ + | |
50c2f753 SF |
1434 | strnlen(pSesInfo->serverName, |
1435 | SERVER_NAME_LEN_WITH_NULL * 2) | |
1da177e4 LT |
1436 | + 1 + 4 /* slash IPC$ */ + 2, |
1437 | GFP_KERNEL); | |
1438 | if (temp_unc == NULL) | |
1439 | return -ENOMEM; | |
1440 | temp_unc[0] = '\\'; | |
1441 | temp_unc[1] = '\\'; | |
1442 | strcpy(temp_unc + 2, pSesInfo->serverName); | |
1443 | strcpy(temp_unc + 2 + strlen(pSesInfo->serverName), "\\IPC$"); | |
1444 | rc = CIFSTCon(xid, pSesInfo, temp_unc, NULL, nls_codepage); | |
1445 | cFYI(1, | |
50c2f753 | 1446 | ("CIFS Tcon rc = %d ipc_tid = %d", rc, pSesInfo->ipc_tid)); |
1da177e4 LT |
1447 | kfree(temp_unc); |
1448 | } | |
1449 | if (rc == 0) | |
c2cf07d5 | 1450 | rc = CIFSGetDFSRefer(xid, pSesInfo, old_path, preferrals, |
737b758c | 1451 | pnum_referrals, nls_codepage, remap); |
366781c1 SF |
1452 | /* BB map targetUNCs to dfs_info3 structures, here or |
1453 | in CIFSGetDFSRefer BB */ | |
1da177e4 LT |
1454 | |
1455 | return rc; | |
1456 | } | |
1457 | ||
1458 | /* See RFC1001 section 14 on representation of Netbios names */ | |
50c2f753 | 1459 | static void rfc1002mangle(char *target, char *source, unsigned int length) |
1da177e4 | 1460 | { |
50c2f753 | 1461 | unsigned int i, j; |
1da177e4 | 1462 | |
50c2f753 | 1463 | for (i = 0, j = 0; i < (length); i++) { |
1da177e4 LT |
1464 | /* mask a nibble at a time and encode */ |
1465 | target[j] = 'A' + (0x0F & (source[i] >> 4)); | |
1466 | target[j+1] = 'A' + (0x0F & source[i]); | |
50c2f753 | 1467 | j += 2; |
1da177e4 LT |
1468 | } |
1469 | ||
1470 | } | |
1471 | ||
1472 | ||
1473 | static int | |
50c2f753 SF |
1474 | ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket, |
1475 | char *netbios_name, char *target_name) | |
1da177e4 LT |
1476 | { |
1477 | int rc = 0; | |
1478 | int connected = 0; | |
1479 | __be16 orig_port = 0; | |
1480 | ||
fb8c4b14 | 1481 | if (*csocket == NULL) { |
50c2f753 SF |
1482 | rc = sock_create_kern(PF_INET, SOCK_STREAM, |
1483 | IPPROTO_TCP, csocket); | |
1da177e4 | 1484 | if (rc < 0) { |
50c2f753 | 1485 | cERROR(1, ("Error %d creating socket", rc)); |
1da177e4 LT |
1486 | *csocket = NULL; |
1487 | return rc; | |
1488 | } else { | |
1489 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
467a8f8d | 1490 | cFYI(1, ("Socket created")); |
50c2f753 | 1491 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1da177e4 LT |
1492 | } |
1493 | } | |
1494 | ||
1495 | psin_server->sin_family = AF_INET; | |
fb8c4b14 | 1496 | if (psin_server->sin_port) { /* user overrode default port */ |
1da177e4 LT |
1497 | rc = (*csocket)->ops->connect(*csocket, |
1498 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1499 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1500 | if (rc >= 0) |
1501 | connected = 1; | |
50c2f753 | 1502 | } |
1da177e4 | 1503 | |
fb8c4b14 | 1504 | if (!connected) { |
50c2f753 | 1505 | /* save original port so we can retry user specified port |
1da177e4 LT |
1506 | later if fall back ports fail this time */ |
1507 | orig_port = psin_server->sin_port; | |
1508 | ||
1509 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1510 | if (psin_server->sin_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1511 | psin_server->sin_port = htons(CIFS_PORT); |
1512 | ||
1513 | rc = (*csocket)->ops->connect(*csocket, | |
1514 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1515 | sizeof(struct sockaddr_in), 0); |
1da177e4 LT |
1516 | if (rc >= 0) |
1517 | connected = 1; | |
1518 | } | |
1519 | } | |
1520 | if (!connected) { | |
1521 | psin_server->sin_port = htons(RFC1001_PORT); | |
1522 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
50c2f753 | 1523 | psin_server, |
6345a3a8 | 1524 | sizeof(struct sockaddr_in), 0); |
50c2f753 | 1525 | if (rc >= 0) |
1da177e4 LT |
1526 | connected = 1; |
1527 | } | |
1528 | ||
1529 | /* give up here - unless we want to retry on different | |
1530 | protocol families some day */ | |
1531 | if (!connected) { | |
fb8c4b14 | 1532 | if (orig_port) |
1da177e4 | 1533 | psin_server->sin_port = orig_port; |
50c2f753 | 1534 | cFYI(1, ("Error %d connecting to server via ipv4", rc)); |
1da177e4 LT |
1535 | sock_release(*csocket); |
1536 | *csocket = NULL; | |
1537 | return rc; | |
1538 | } | |
50c2f753 SF |
1539 | /* Eventually check for other socket options to change from |
1540 | the default. sock_setsockopt not used because it expects | |
1da177e4 | 1541 | user space buffer */ |
50c2f753 SF |
1542 | cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx", |
1543 | (*csocket)->sk->sk_sndbuf, | |
b387eaeb | 1544 | (*csocket)->sk->sk_rcvbuf, (*csocket)->sk->sk_rcvtimeo)); |
1da177e4 | 1545 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; |
b387eaeb | 1546 | /* make the bufsizes depend on wsize/rsize and max requests */ |
fb8c4b14 | 1547 | if ((*csocket)->sk->sk_sndbuf < (200 * 1024)) |
b387eaeb | 1548 | (*csocket)->sk->sk_sndbuf = 200 * 1024; |
fb8c4b14 | 1549 | if ((*csocket)->sk->sk_rcvbuf < (140 * 1024)) |
b387eaeb | 1550 | (*csocket)->sk->sk_rcvbuf = 140 * 1024; |
1da177e4 LT |
1551 | |
1552 | /* send RFC1001 sessinit */ | |
fb8c4b14 | 1553 | if (psin_server->sin_port == htons(RFC1001_PORT)) { |
1da177e4 | 1554 | /* some servers require RFC1001 sessinit before sending |
50c2f753 | 1555 | negprot - BB check reconnection in case where second |
1da177e4 | 1556 | sessinit is sent but no second negprot */ |
50c2f753 SF |
1557 | struct rfc1002_session_packet *ses_init_buf; |
1558 | struct smb_hdr *smb_buf; | |
1559 | ses_init_buf = kzalloc(sizeof(struct rfc1002_session_packet), | |
1560 | GFP_KERNEL); | |
fb8c4b14 | 1561 | if (ses_init_buf) { |
1da177e4 | 1562 | ses_init_buf->trailer.session_req.called_len = 32; |
fb8c4b14 | 1563 | if (target_name && (target_name[0] != 0)) { |
a10faeb2 SF |
1564 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, |
1565 | target_name, 16); | |
1566 | } else { | |
1567 | rfc1002mangle(ses_init_buf->trailer.session_req.called_name, | |
50c2f753 | 1568 | DEFAULT_CIFS_CALLED_NAME, 16); |
a10faeb2 SF |
1569 | } |
1570 | ||
1da177e4 LT |
1571 | ses_init_buf->trailer.session_req.calling_len = 32; |
1572 | /* calling name ends in null (byte 16) from old smb | |
1573 | convention. */ | |
50c2f753 | 1574 | if (netbios_name && (netbios_name[0] != 0)) { |
1da177e4 | 1575 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, |
50c2f753 | 1576 | netbios_name, 16); |
1da177e4 LT |
1577 | } else { |
1578 | rfc1002mangle(ses_init_buf->trailer.session_req.calling_name, | |
50c2f753 | 1579 | "LINUX_CIFS_CLNT", 16); |
1da177e4 LT |
1580 | } |
1581 | ses_init_buf->trailer.session_req.scope1 = 0; | |
1582 | ses_init_buf->trailer.session_req.scope2 = 0; | |
1583 | smb_buf = (struct smb_hdr *)ses_init_buf; | |
1584 | /* sizeof RFC1002_SESSION_REQUEST with no scope */ | |
1585 | smb_buf->smb_buf_length = 0x81000044; | |
1586 | rc = smb_send(*csocket, smb_buf, 0x44, | |
1587 | (struct sockaddr *)psin_server); | |
1588 | kfree(ses_init_buf); | |
50c2f753 | 1589 | msleep(1); /* RFC1001 layer in at least one server |
083d3a2c SF |
1590 | requires very short break before negprot |
1591 | presumably because not expecting negprot | |
1592 | to follow so fast. This is a simple | |
50c2f753 | 1593 | solution that works without |
083d3a2c SF |
1594 | complicating the code and causes no |
1595 | significant slowing down on mount | |
1596 | for everyone else */ | |
1da177e4 | 1597 | } |
50c2f753 | 1598 | /* else the negprot may still work without this |
1da177e4 | 1599 | even though malloc failed */ |
50c2f753 | 1600 | |
1da177e4 | 1601 | } |
50c2f753 | 1602 | |
1da177e4 LT |
1603 | return rc; |
1604 | } | |
1605 | ||
1606 | static int | |
1607 | ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket) | |
1608 | { | |
1609 | int rc = 0; | |
1610 | int connected = 0; | |
1611 | __be16 orig_port = 0; | |
1612 | ||
fb8c4b14 | 1613 | if (*csocket == NULL) { |
50c2f753 SF |
1614 | rc = sock_create_kern(PF_INET6, SOCK_STREAM, |
1615 | IPPROTO_TCP, csocket); | |
1da177e4 | 1616 | if (rc < 0) { |
50c2f753 | 1617 | cERROR(1, ("Error %d creating ipv6 socket", rc)); |
1da177e4 LT |
1618 | *csocket = NULL; |
1619 | return rc; | |
1620 | } else { | |
1621 | /* BB other socket options to set KEEPALIVE, NODELAY? */ | |
fb8c4b14 | 1622 | cFYI(1, ("ipv6 Socket created")); |
1da177e4 LT |
1623 | (*csocket)->sk->sk_allocation = GFP_NOFS; |
1624 | } | |
1625 | } | |
1626 | ||
1627 | psin_server->sin6_family = AF_INET6; | |
1628 | ||
fb8c4b14 | 1629 | if (psin_server->sin6_port) { /* user overrode default port */ |
1da177e4 LT |
1630 | rc = (*csocket)->ops->connect(*csocket, |
1631 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1632 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1633 | if (rc >= 0) |
1634 | connected = 1; | |
50c2f753 | 1635 | } |
1da177e4 | 1636 | |
fb8c4b14 | 1637 | if (!connected) { |
50c2f753 | 1638 | /* save original port so we can retry user specified port |
1da177e4 LT |
1639 | later if fall back ports fail this time */ |
1640 | ||
1641 | orig_port = psin_server->sin6_port; | |
1642 | /* do not retry on the same port we just failed on */ | |
fb8c4b14 | 1643 | if (psin_server->sin6_port != htons(CIFS_PORT)) { |
1da177e4 LT |
1644 | psin_server->sin6_port = htons(CIFS_PORT); |
1645 | ||
1646 | rc = (*csocket)->ops->connect(*csocket, | |
1647 | (struct sockaddr *) psin_server, | |
6345a3a8 | 1648 | sizeof(struct sockaddr_in6), 0); |
1da177e4 LT |
1649 | if (rc >= 0) |
1650 | connected = 1; | |
1651 | } | |
1652 | } | |
1653 | if (!connected) { | |
1654 | psin_server->sin6_port = htons(RFC1001_PORT); | |
1655 | rc = (*csocket)->ops->connect(*csocket, (struct sockaddr *) | |
6345a3a8 | 1656 | psin_server, sizeof(struct sockaddr_in6), 0); |
50c2f753 | 1657 | if (rc >= 0) |
1da177e4 LT |
1658 | connected = 1; |
1659 | } | |
1660 | ||
1661 | /* give up here - unless we want to retry on different | |
1662 | protocol families some day */ | |
1663 | if (!connected) { | |
fb8c4b14 | 1664 | if (orig_port) |
1da177e4 | 1665 | psin_server->sin6_port = orig_port; |
50c2f753 | 1666 | cFYI(1, ("Error %d connecting to server via ipv6", rc)); |
1da177e4 LT |
1667 | sock_release(*csocket); |
1668 | *csocket = NULL; | |
1669 | return rc; | |
1670 | } | |
50c2f753 SF |
1671 | /* Eventually check for other socket options to change from |
1672 | the default. sock_setsockopt not used because it expects | |
1da177e4 LT |
1673 | user space buffer */ |
1674 | (*csocket)->sk->sk_rcvtimeo = 7 * HZ; | |
50c2f753 | 1675 | |
1da177e4 LT |
1676 | return rc; |
1677 | } | |
1678 | ||
50c2f753 SF |
1679 | void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon, |
1680 | struct super_block *sb, struct smb_vol *vol_info) | |
8af18971 SF |
1681 | { |
1682 | /* if we are reconnecting then should we check to see if | |
1683 | * any requested capabilities changed locally e.g. via | |
1684 | * remount but we can not do much about it here | |
1685 | * if they have (even if we could detect it by the following) | |
1686 | * Perhaps we could add a backpointer to array of sb from tcon | |
1687 | * or if we change to make all sb to same share the same | |
1688 | * sb as NFS - then we only have one backpointer to sb. | |
1689 | * What if we wanted to mount the server share twice once with | |
1690 | * and once without posixacls or posix paths? */ | |
1691 | __u64 saved_cap = le64_to_cpu(tcon->fsUnixInfo.Capability); | |
50c2f753 | 1692 | |
c18c842b SF |
1693 | if (vol_info && vol_info->no_linux_ext) { |
1694 | tcon->fsUnixInfo.Capability = 0; | |
1695 | tcon->unix_ext = 0; /* Unix Extensions disabled */ | |
1696 | cFYI(1, ("Linux protocol extensions disabled")); | |
1697 | return; | |
1698 | } else if (vol_info) | |
1699 | tcon->unix_ext = 1; /* Unix Extensions supported */ | |
1700 | ||
1701 | if (tcon->unix_ext == 0) { | |
1702 | cFYI(1, ("Unix extensions disabled so not set on reconnect")); | |
1703 | return; | |
1704 | } | |
50c2f753 | 1705 | |
fb8c4b14 | 1706 | if (!CIFSSMBQFSUnixInfo(xid, tcon)) { |
8af18971 | 1707 | __u64 cap = le64_to_cpu(tcon->fsUnixInfo.Capability); |
50c2f753 | 1708 | |
8af18971 SF |
1709 | /* check for reconnect case in which we do not |
1710 | want to change the mount behavior if we can avoid it */ | |
fb8c4b14 | 1711 | if (vol_info == NULL) { |
50c2f753 | 1712 | /* turn off POSIX ACL and PATHNAMES if not set |
8af18971 SF |
1713 | originally at mount time */ |
1714 | if ((saved_cap & CIFS_UNIX_POSIX_ACL_CAP) == 0) | |
1715 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; | |
11b6d645 IM |
1716 | if ((saved_cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1717 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) | |
1718 | cERROR(1, ("POSIXPATH support change")); | |
8af18971 | 1719 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
11b6d645 IM |
1720 | } else if ((cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) == 0) { |
1721 | cERROR(1, ("possible reconnect error")); | |
1722 | cERROR(1, | |
1723 | ("server disabled POSIX path support")); | |
1724 | } | |
8af18971 | 1725 | } |
50c2f753 | 1726 | |
8af18971 | 1727 | cap &= CIFS_UNIX_CAP_MASK; |
75865f8c | 1728 | if (vol_info && vol_info->no_psx_acl) |
8af18971 | 1729 | cap &= ~CIFS_UNIX_POSIX_ACL_CAP; |
75865f8c | 1730 | else if (CIFS_UNIX_POSIX_ACL_CAP & cap) { |
fb8c4b14 SF |
1731 | cFYI(1, ("negotiated posix acl support")); |
1732 | if (sb) | |
8af18971 SF |
1733 | sb->s_flags |= MS_POSIXACL; |
1734 | } | |
1735 | ||
75865f8c | 1736 | if (vol_info && vol_info->posix_paths == 0) |
8af18971 | 1737 | cap &= ~CIFS_UNIX_POSIX_PATHNAMES_CAP; |
75865f8c | 1738 | else if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) { |
fb8c4b14 | 1739 | cFYI(1, ("negotiate posix pathnames")); |
75865f8c | 1740 | if (sb) |
50c2f753 | 1741 | CIFS_SB(sb)->mnt_cifs_flags |= |
8af18971 SF |
1742 | CIFS_MOUNT_POSIX_PATHS; |
1743 | } | |
50c2f753 | 1744 | |
984acfe1 SF |
1745 | /* We might be setting the path sep back to a different |
1746 | form if we are reconnecting and the server switched its | |
50c2f753 | 1747 | posix path capability for this share */ |
75865f8c | 1748 | if (sb && (CIFS_SB(sb)->prepathlen > 0)) |
984acfe1 | 1749 | CIFS_SB(sb)->prepath[0] = CIFS_DIR_SEP(CIFS_SB(sb)); |
75865f8c SF |
1750 | |
1751 | if (sb && (CIFS_SB(sb)->rsize > 127 * 1024)) { | |
1752 | if ((cap & CIFS_UNIX_LARGE_READ_CAP) == 0) { | |
1753 | CIFS_SB(sb)->rsize = 127 * 1024; | |
90c81e0b SF |
1754 | cFYI(DBG2, |
1755 | ("larger reads not supported by srv")); | |
75865f8c SF |
1756 | } |
1757 | } | |
50c2f753 SF |
1758 | |
1759 | ||
1760 | cFYI(1, ("Negotiate caps 0x%x", (int)cap)); | |
8af18971 | 1761 | #ifdef CONFIG_CIFS_DEBUG2 |
75865f8c | 1762 | if (cap & CIFS_UNIX_FCNTL_CAP) |
fb8c4b14 | 1763 | cFYI(1, ("FCNTL cap")); |
75865f8c | 1764 | if (cap & CIFS_UNIX_EXTATTR_CAP) |
fb8c4b14 | 1765 | cFYI(1, ("EXTATTR cap")); |
75865f8c | 1766 | if (cap & CIFS_UNIX_POSIX_PATHNAMES_CAP) |
fb8c4b14 | 1767 | cFYI(1, ("POSIX path cap")); |
75865f8c | 1768 | if (cap & CIFS_UNIX_XATTR_CAP) |
fb8c4b14 | 1769 | cFYI(1, ("XATTR cap")); |
75865f8c | 1770 | if (cap & CIFS_UNIX_POSIX_ACL_CAP) |
fb8c4b14 | 1771 | cFYI(1, ("POSIX ACL cap")); |
75865f8c | 1772 | if (cap & CIFS_UNIX_LARGE_READ_CAP) |
fb8c4b14 | 1773 | cFYI(1, ("very large read cap")); |
75865f8c | 1774 | if (cap & CIFS_UNIX_LARGE_WRITE_CAP) |
fb8c4b14 | 1775 | cFYI(1, ("very large write cap")); |
8af18971 SF |
1776 | #endif /* CIFS_DEBUG2 */ |
1777 | if (CIFSSMBSetFSUnixInfo(xid, tcon, cap)) { | |
442aa310 | 1778 | if (vol_info == NULL) { |
5a44b319 | 1779 | cFYI(1, ("resetting capabilities failed")); |
442aa310 | 1780 | } else |
5a44b319 SF |
1781 | cERROR(1, ("Negotiating Unix capabilities " |
1782 | "with the server failed. Consider " | |
1783 | "mounting with the Unix Extensions\n" | |
1784 | "disabled, if problems are found, " | |
1785 | "by specifying the nounix mount " | |
2224f4e5 | 1786 | "option.")); |
5a44b319 | 1787 | |
8af18971 SF |
1788 | } |
1789 | } | |
1790 | } | |
1791 | ||
03a143c9 SF |
1792 | static void |
1793 | convert_delimiter(char *path, char delim) | |
1794 | { | |
1795 | int i; | |
c2d68ea6 | 1796 | char old_delim; |
03a143c9 SF |
1797 | |
1798 | if (path == NULL) | |
1799 | return; | |
1800 | ||
582d21e5 | 1801 | if (delim == '/') |
c2d68ea6 SF |
1802 | old_delim = '\\'; |
1803 | else | |
1804 | old_delim = '/'; | |
1805 | ||
03a143c9 | 1806 | for (i = 0; path[i] != '\0'; i++) { |
c2d68ea6 | 1807 | if (path[i] == old_delim) |
03a143c9 SF |
1808 | path[i] = delim; |
1809 | } | |
1810 | } | |
1811 | ||
1da177e4 LT |
1812 | int |
1813 | cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, | |
1814 | char *mount_data, const char *devname) | |
1815 | { | |
1816 | int rc = 0; | |
1817 | int xid; | |
1818 | int address_type = AF_INET; | |
1819 | struct socket *csocket = NULL; | |
1820 | struct sockaddr_in sin_server; | |
1821 | struct sockaddr_in6 sin_server6; | |
1822 | struct smb_vol volume_info; | |
1823 | struct cifsSesInfo *pSesInfo = NULL; | |
1824 | struct cifsSesInfo *existingCifsSes = NULL; | |
1825 | struct cifsTconInfo *tcon = NULL; | |
1826 | struct TCP_Server_Info *srvTcp = NULL; | |
1827 | ||
1828 | xid = GetXid(); | |
1829 | ||
1830 | /* cFYI(1, ("Entering cifs_mount. Xid: %d with: %s", xid, mount_data)); */ | |
50c2f753 SF |
1831 | |
1832 | memset(&volume_info, 0, sizeof(struct smb_vol)); | |
1da177e4 | 1833 | if (cifs_parse_mount_options(mount_data, devname, &volume_info)) { |
70fe7dc0 JL |
1834 | rc = -EINVAL; |
1835 | goto out; | |
1da177e4 LT |
1836 | } |
1837 | ||
8426c39c | 1838 | if (volume_info.nullauth) { |
fb8c4b14 | 1839 | cFYI(1, ("null user")); |
9b8f5f57 | 1840 | volume_info.username = ""; |
8426c39c | 1841 | } else if (volume_info.username) { |
1da177e4 | 1842 | /* BB fixme parse for domain name here */ |
467a8f8d | 1843 | cFYI(1, ("Username: %s", volume_info.username)); |
1da177e4 | 1844 | } else { |
bf820679 | 1845 | cifserror("No username specified"); |
50c2f753 SF |
1846 | /* In userspace mount helper we can get user name from alternate |
1847 | locations such as env variables and files on disk */ | |
70fe7dc0 JL |
1848 | rc = -EINVAL; |
1849 | goto out; | |
1da177e4 LT |
1850 | } |
1851 | ||
1852 | if (volume_info.UNCip && volume_info.UNC) { | |
50c2f753 SF |
1853 | rc = cifs_inet_pton(AF_INET, volume_info.UNCip, |
1854 | &sin_server.sin_addr.s_addr); | |
1da177e4 | 1855 | |
fb8c4b14 | 1856 | if (rc <= 0) { |
1da177e4 | 1857 | /* not ipv4 address, try ipv6 */ |
50c2f753 SF |
1858 | rc = cifs_inet_pton(AF_INET6, volume_info.UNCip, |
1859 | &sin_server6.sin6_addr.in6_u); | |
fb8c4b14 | 1860 | if (rc > 0) |
1da177e4 LT |
1861 | address_type = AF_INET6; |
1862 | } else { | |
1863 | address_type = AF_INET; | |
1864 | } | |
50c2f753 | 1865 | |
fb8c4b14 | 1866 | if (rc <= 0) { |
1da177e4 | 1867 | /* we failed translating address */ |
70fe7dc0 JL |
1868 | rc = -EINVAL; |
1869 | goto out; | |
1da177e4 LT |
1870 | } |
1871 | ||
1872 | cFYI(1, ("UNC: %s ip: %s", volume_info.UNC, volume_info.UNCip)); | |
1873 | /* success */ | |
1874 | rc = 0; | |
50c2f753 SF |
1875 | } else if (volume_info.UNCip) { |
1876 | /* BB using ip addr as server name to connect to the | |
1877 | DFS root below */ | |
1878 | cERROR(1, ("Connecting to DFS root not implemented yet")); | |
70fe7dc0 JL |
1879 | rc = -EINVAL; |
1880 | goto out; | |
1da177e4 LT |
1881 | } else /* which servers DFS root would we conect to */ { |
1882 | cERROR(1, | |
50c2f753 SF |
1883 | ("CIFS mount error: No UNC path (e.g. -o " |
1884 | "unc=//192.168.1.100/public) specified")); | |
70fe7dc0 JL |
1885 | rc = -EINVAL; |
1886 | goto out; | |
1da177e4 LT |
1887 | } |
1888 | ||
1889 | /* this is needed for ASCII cp to Unicode converts */ | |
fb8c4b14 | 1890 | if (volume_info.iocharset == NULL) { |
1da177e4 LT |
1891 | cifs_sb->local_nls = load_nls_default(); |
1892 | /* load_nls_default can not return null */ | |
1893 | } else { | |
1894 | cifs_sb->local_nls = load_nls(volume_info.iocharset); | |
fb8c4b14 | 1895 | if (cifs_sb->local_nls == NULL) { |
50c2f753 SF |
1896 | cERROR(1, ("CIFS mount error: iocharset %s not found", |
1897 | volume_info.iocharset)); | |
70fe7dc0 JL |
1898 | rc = -ELIBACC; |
1899 | goto out; | |
1da177e4 LT |
1900 | } |
1901 | } | |
1902 | ||
fb8c4b14 | 1903 | if (address_type == AF_INET) |
1da177e4 LT |
1904 | existingCifsSes = cifs_find_tcp_session(&sin_server.sin_addr, |
1905 | NULL /* no ipv6 addr */, | |
1906 | volume_info.username, &srvTcp); | |
fb8c4b14 SF |
1907 | else if (address_type == AF_INET6) { |
1908 | cFYI(1, ("looking for ipv6 address")); | |
1da177e4 LT |
1909 | existingCifsSes = cifs_find_tcp_session(NULL /* no ipv4 addr */, |
1910 | &sin_server6.sin6_addr, | |
1911 | volume_info.username, &srvTcp); | |
5858ae44 | 1912 | } else { |
70fe7dc0 JL |
1913 | rc = -EINVAL; |
1914 | goto out; | |
1da177e4 LT |
1915 | } |
1916 | ||
1da177e4 | 1917 | if (srvTcp) { |
50c2f753 | 1918 | cFYI(1, ("Existing tcp session with server found")); |
1da177e4 | 1919 | } else { /* create socket */ |
4523cc30 | 1920 | if (volume_info.port) |
1da177e4 LT |
1921 | sin_server.sin_port = htons(volume_info.port); |
1922 | else | |
1923 | sin_server.sin_port = 0; | |
5858ae44 | 1924 | if (address_type == AF_INET6) { |
fb8c4b14 | 1925 | cFYI(1, ("attempting ipv6 connect")); |
5858ae44 SF |
1926 | /* BB should we allow ipv6 on port 139? */ |
1927 | /* other OS never observed in Wild doing 139 with v6 */ | |
50c2f753 SF |
1928 | rc = ipv6_connect(&sin_server6, &csocket); |
1929 | } else | |
1930 | rc = ipv4_connect(&sin_server, &csocket, | |
a10faeb2 SF |
1931 | volume_info.source_rfc1001_name, |
1932 | volume_info.target_rfc1001_name); | |
1da177e4 | 1933 | if (rc < 0) { |
50c2f753 SF |
1934 | cERROR(1, ("Error connecting to IPv4 socket. " |
1935 | "Aborting operation")); | |
4523cc30 | 1936 | if (csocket != NULL) |
1da177e4 | 1937 | sock_release(csocket); |
70fe7dc0 | 1938 | goto out; |
1da177e4 LT |
1939 | } |
1940 | ||
a8a11d39 MK |
1941 | srvTcp = kzalloc(sizeof(struct TCP_Server_Info), GFP_KERNEL); |
1942 | if (!srvTcp) { | |
1da177e4 LT |
1943 | rc = -ENOMEM; |
1944 | sock_release(csocket); | |
70fe7dc0 | 1945 | goto out; |
1da177e4 | 1946 | } else { |
50c2f753 | 1947 | memcpy(&srvTcp->addr.sockAddr, &sin_server, |
6345a3a8 | 1948 | sizeof(struct sockaddr_in)); |
50c2f753 | 1949 | atomic_set(&srvTcp->inFlight, 0); |
1da177e4 LT |
1950 | /* BB Add code for ipv6 case too */ |
1951 | srvTcp->ssocket = csocket; | |
1952 | srvTcp->protocolType = IPV4; | |
c359cf3c JL |
1953 | srvTcp->hostname = extract_hostname(volume_info.UNC); |
1954 | if (IS_ERR(srvTcp->hostname)) { | |
1955 | rc = PTR_ERR(srvTcp->hostname); | |
1956 | sock_release(csocket); | |
1957 | goto out; | |
1958 | } | |
1da177e4 LT |
1959 | init_waitqueue_head(&srvTcp->response_q); |
1960 | init_waitqueue_head(&srvTcp->request_q); | |
1961 | INIT_LIST_HEAD(&srvTcp->pending_mid_q); | |
1962 | /* at this point we are the only ones with the pointer | |
1963 | to the struct since the kernel thread not created yet | |
1964 | so no need to spinlock this init of tcpStatus */ | |
1965 | srvTcp->tcpStatus = CifsNew; | |
1966 | init_MUTEX(&srvTcp->tcpSem); | |
aaf737ad | 1967 | srvTcp->tsk = kthread_run((void *)(void *)cifs_demultiplex_thread, srvTcp, "cifsd"); |
8840dee9 | 1968 | if (IS_ERR(srvTcp->tsk)) { |
aaf737ad | 1969 | rc = PTR_ERR(srvTcp->tsk); |
50c2f753 | 1970 | cERROR(1, ("error %d create cifsd thread", rc)); |
aaf737ad | 1971 | srvTcp->tsk = NULL; |
1da177e4 | 1972 | sock_release(csocket); |
c359cf3c | 1973 | kfree(srvTcp->hostname); |
70fe7dc0 | 1974 | goto out; |
f191401f | 1975 | } |
f191401f | 1976 | rc = 0; |
50c2f753 SF |
1977 | memcpy(srvTcp->workstation_RFC1001_name, |
1978 | volume_info.source_rfc1001_name, 16); | |
1979 | memcpy(srvTcp->server_RFC1001_name, | |
1980 | volume_info.target_rfc1001_name, 16); | |
ad009ac9 | 1981 | srvTcp->sequence_number = 0; |
1da177e4 LT |
1982 | } |
1983 | } | |
1984 | ||
1985 | if (existingCifsSes) { | |
1986 | pSesInfo = existingCifsSes; | |
1d9a8852 JL |
1987 | cFYI(1, ("Existing smb sess found (status=%d)", |
1988 | pSesInfo->status)); | |
88e7d705 | 1989 | down(&pSesInfo->sesSem); |
1d9a8852 JL |
1990 | if (pSesInfo->status == CifsNeedReconnect) { |
1991 | cFYI(1, ("Session needs reconnect")); | |
1d9a8852 JL |
1992 | rc = cifs_setup_session(xid, pSesInfo, |
1993 | cifs_sb->local_nls); | |
1d9a8852 | 1994 | } |
88e7d705 | 1995 | up(&pSesInfo->sesSem); |
1da177e4 | 1996 | } else if (!rc) { |
bf820679 | 1997 | cFYI(1, ("Existing smb sess not found")); |
1da177e4 LT |
1998 | pSesInfo = sesInfoAlloc(); |
1999 | if (pSesInfo == NULL) | |
2000 | rc = -ENOMEM; | |
2001 | else { | |
2002 | pSesInfo->server = srvTcp; | |
2003 | sprintf(pSesInfo->serverName, "%u.%u.%u.%u", | |
2004 | NIPQUAD(sin_server.sin_addr.s_addr)); | |
2005 | } | |
2006 | ||
50c2f753 SF |
2007 | if (!rc) { |
2008 | /* volume_info.password freed at unmount */ | |
70fe7dc0 | 2009 | if (volume_info.password) { |
1da177e4 | 2010 | pSesInfo->password = volume_info.password; |
70fe7dc0 JL |
2011 | /* set to NULL to prevent freeing on exit */ |
2012 | volume_info.password = NULL; | |
2013 | } | |
1da177e4 LT |
2014 | if (volume_info.username) |
2015 | strncpy(pSesInfo->userName, | |
50c2f753 SF |
2016 | volume_info.username, |
2017 | MAX_USERNAME_SIZE); | |
3979877e SF |
2018 | if (volume_info.domainname) { |
2019 | int len = strlen(volume_info.domainname); | |
50c2f753 | 2020 | pSesInfo->domainName = |
3979877e | 2021 | kmalloc(len + 1, GFP_KERNEL); |
4523cc30 | 2022 | if (pSesInfo->domainName) |
3979877e SF |
2023 | strcpy(pSesInfo->domainName, |
2024 | volume_info.domainname); | |
2025 | } | |
1da177e4 | 2026 | pSesInfo->linux_uid = volume_info.linux_uid; |
750d1151 | 2027 | pSesInfo->overrideSecFlg = volume_info.secFlg; |
1da177e4 | 2028 | down(&pSesInfo->sesSem); |
189acaae | 2029 | /* BB FIXME need to pass vol->secFlgs BB */ |
50c2f753 SF |
2030 | rc = cifs_setup_session(xid, pSesInfo, |
2031 | cifs_sb->local_nls); | |
1da177e4 | 2032 | up(&pSesInfo->sesSem); |
4523cc30 | 2033 | if (!rc) |
1da177e4 | 2034 | atomic_inc(&srvTcp->socketUseCount); |
70fe7dc0 | 2035 | } |
1da177e4 | 2036 | } |
50c2f753 | 2037 | |
1da177e4 LT |
2038 | /* search for existing tcon to this server share */ |
2039 | if (!rc) { | |
4523cc30 | 2040 | if (volume_info.rsize > CIFSMaxBufSize) { |
50c2f753 | 2041 | cERROR(1, ("rsize %d too large, using MaxBufSize", |
0ae0efad SF |
2042 | volume_info.rsize)); |
2043 | cifs_sb->rsize = CIFSMaxBufSize; | |
75865f8c SF |
2044 | } else if ((volume_info.rsize) && |
2045 | (volume_info.rsize <= CIFSMaxBufSize)) | |
1da177e4 | 2046 | cifs_sb->rsize = volume_info.rsize; |
0ae0efad SF |
2047 | else /* default */ |
2048 | cifs_sb->rsize = CIFSMaxBufSize; | |
2049 | ||
4523cc30 | 2050 | if (volume_info.wsize > PAGEVEC_SIZE * PAGE_CACHE_SIZE) { |
50c2f753 | 2051 | cERROR(1, ("wsize %d too large, using 4096 instead", |
0ae0efad SF |
2052 | volume_info.wsize)); |
2053 | cifs_sb->wsize = 4096; | |
4523cc30 | 2054 | } else if (volume_info.wsize) |
1da177e4 LT |
2055 | cifs_sb->wsize = volume_info.wsize; |
2056 | else | |
50c2f753 | 2057 | cifs_sb->wsize = |
1877c9ea SF |
2058 | min_t(const int, PAGEVEC_SIZE * PAGE_CACHE_SIZE, |
2059 | 127*1024); | |
17cbbafe | 2060 | /* old default of CIFSMaxBufSize was too small now |
50c2f753 | 2061 | that SMB Write2 can send multiple pages in kvec. |
17cbbafe SF |
2062 | RFC1001 does not describe what happens when frame |
2063 | bigger than 128K is sent so use that as max in | |
2064 | conjunction with 52K kvec constraint on arch with 4K | |
2065 | page size */ | |
2066 | ||
4523cc30 | 2067 | if (cifs_sb->rsize < 2048) { |
50c2f753 | 2068 | cifs_sb->rsize = 2048; |
6cec2aed | 2069 | /* Windows ME may prefer this */ |
467a8f8d | 2070 | cFYI(1, ("readsize set to minimum: 2048")); |
1da177e4 | 2071 | } |
2fe87f02 SF |
2072 | /* calculate prepath */ |
2073 | cifs_sb->prepath = volume_info.prepath; | |
4523cc30 | 2074 | if (cifs_sb->prepath) { |
2fe87f02 | 2075 | cifs_sb->prepathlen = strlen(cifs_sb->prepath); |
03a143c9 SF |
2076 | /* we can not convert the / to \ in the path |
2077 | separators in the prefixpath yet because we do not | |
2078 | know (until reset_cifs_unix_caps is called later) | |
2079 | whether POSIX PATH CAP is available. We normalize | |
2080 | the / to \ after reset_cifs_unix_caps is called */ | |
2fe87f02 | 2081 | volume_info.prepath = NULL; |
50c2f753 | 2082 | } else |
2fe87f02 | 2083 | cifs_sb->prepathlen = 0; |
1da177e4 LT |
2084 | cifs_sb->mnt_uid = volume_info.linux_uid; |
2085 | cifs_sb->mnt_gid = volume_info.linux_gid; | |
2086 | cifs_sb->mnt_file_mode = volume_info.file_mode; | |
2087 | cifs_sb->mnt_dir_mode = volume_info.dir_mode; | |
467a8f8d SF |
2088 | cFYI(1, ("file mode: 0x%x dir mode: 0x%x", |
2089 | cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode)); | |
1da177e4 | 2090 | |
4523cc30 | 2091 | if (volume_info.noperm) |
1da177e4 | 2092 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_PERM; |
4523cc30 | 2093 | if (volume_info.setuids) |
1da177e4 | 2094 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SET_UID; |
4523cc30 | 2095 | if (volume_info.server_ino) |
1da177e4 | 2096 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_SERVER_INUM; |
4523cc30 | 2097 | if (volume_info.remap) |
6a0b4824 | 2098 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_MAP_SPECIAL_CHR; |
4523cc30 | 2099 | if (volume_info.no_xattr) |
1da177e4 | 2100 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_XATTR; |
4523cc30 | 2101 | if (volume_info.sfu_emul) |
d7245c2c | 2102 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_UNX_EMUL; |
4523cc30 | 2103 | if (volume_info.nobrl) |
c46fa8ac | 2104 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_NO_BRL; |
4523cc30 | 2105 | if (volume_info.cifs_acl) |
0a4b92c0 | 2106 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; |
4523cc30 SF |
2107 | if (volume_info.override_uid) |
2108 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; | |
2109 | if (volume_info.override_gid) | |
2110 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_GID; | |
d0a9c078 JL |
2111 | if (volume_info.dynperm) |
2112 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DYNPERM; | |
4523cc30 | 2113 | if (volume_info.direct_io) { |
467a8f8d | 2114 | cFYI(1, ("mounting share using direct i/o")); |
1da177e4 LT |
2115 | cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_DIRECT_IO; |
2116 | } | |
2117 | ||
2118 | tcon = | |
2119 | find_unc(sin_server.sin_addr.s_addr, volume_info.UNC, | |
2120 | volume_info.username); | |
2121 | if (tcon) { | |
bf820679 | 2122 | cFYI(1, ("Found match on UNC path")); |
1da177e4 LT |
2123 | /* we can have only one retry value for a connection |
2124 | to a share so for resources mounted more than once | |
50c2f753 | 2125 | to the same server share the last value passed in |
1da177e4 LT |
2126 | for the retry flag is used */ |
2127 | tcon->retry = volume_info.retry; | |
d3485d37 | 2128 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2129 | } else { |
2130 | tcon = tconInfoAlloc(); | |
2131 | if (tcon == NULL) | |
2132 | rc = -ENOMEM; | |
2133 | else { | |
50c2f753 | 2134 | /* check for null share name ie connecting to |
8af18971 | 2135 | * dfs root */ |
1da177e4 | 2136 | |
50c2f753 | 2137 | /* BB check if this works for exactly length |
8af18971 | 2138 | * three strings */ |
1da177e4 LT |
2139 | if ((strchr(volume_info.UNC + 3, '\\') == NULL) |
2140 | && (strchr(volume_info.UNC + 3, '/') == | |
2141 | NULL)) { | |
646dd539 | 2142 | /* rc = connect_to_dfs_path(xid, pSesInfo, |
8af18971 | 2143 | "", cifs_sb->local_nls, |
50c2f753 | 2144 | cifs_sb->mnt_cifs_flags & |
646dd539 SF |
2145 | CIFS_MOUNT_MAP_SPECIAL_CHR);*/ |
2146 | cFYI(1, ("DFS root not supported")); | |
70fe7dc0 JL |
2147 | rc = -ENODEV; |
2148 | goto out; | |
1da177e4 | 2149 | } else { |
8af18971 SF |
2150 | /* BB Do we need to wrap sesSem around |
2151 | * this TCon call and Unix SetFS as | |
2152 | * we do on SessSetup and reconnect? */ | |
50c2f753 | 2153 | rc = CIFSTCon(xid, pSesInfo, |
1da177e4 LT |
2154 | volume_info.UNC, |
2155 | tcon, cifs_sb->local_nls); | |
2156 | cFYI(1, ("CIFS Tcon rc = %d", rc)); | |
2157 | } | |
2158 | if (!rc) { | |
2159 | atomic_inc(&pSesInfo->inUse); | |
2160 | tcon->retry = volume_info.retry; | |
d3485d37 | 2161 | tcon->nocase = volume_info.nocase; |
1da177e4 LT |
2162 | } |
2163 | } | |
2164 | } | |
2165 | } | |
4523cc30 | 2166 | if (pSesInfo) { |
1da177e4 LT |
2167 | if (pSesInfo->capabilities & CAP_LARGE_FILES) { |
2168 | sb->s_maxbytes = (u64) 1 << 63; | |
2169 | } else | |
2170 | sb->s_maxbytes = (u64) 1 << 31; /* 2 GB */ | |
2171 | } | |
2172 | ||
8af18971 | 2173 | /* BB FIXME fix time_gran to be larger for LANMAN sessions */ |
1da177e4 LT |
2174 | sb->s_time_gran = 100; |
2175 | ||
2176 | /* on error free sesinfo and tcon struct if needed */ | |
2177 | if (rc) { | |
2178 | /* if session setup failed, use count is zero but | |
2179 | we still need to free cifsd thread */ | |
4523cc30 | 2180 | if (atomic_read(&srvTcp->socketUseCount) == 0) { |
1da177e4 LT |
2181 | spin_lock(&GlobalMid_Lock); |
2182 | srvTcp->tcpStatus = CifsExiting; | |
2183 | spin_unlock(&GlobalMid_Lock); | |
4523cc30 | 2184 | if (srvTcp->tsk) { |
28356a16 SF |
2185 | /* If we could verify that kthread_stop would |
2186 | always wake up processes blocked in | |
2187 | tcp in recv_mesg then we could remove the | |
2188 | send_sig call */ | |
50c2f753 | 2189 | force_sig(SIGKILL, srvTcp->tsk); |
e691b9d1 | 2190 | kthread_stop(srvTcp->tsk); |
f191401f | 2191 | } |
1da177e4 LT |
2192 | } |
2193 | /* If find_unc succeeded then rc == 0 so we can not end */ | |
2194 | if (tcon) /* up accidently freeing someone elses tcon struct */ | |
2195 | tconInfoFree(tcon); | |
2196 | if (existingCifsSes == NULL) { | |
2197 | if (pSesInfo) { | |
50c2f753 | 2198 | if ((pSesInfo->server) && |
1da177e4 LT |
2199 | (pSesInfo->status == CifsGood)) { |
2200 | int temp_rc; | |
2201 | temp_rc = CIFSSMBLogoff(xid, pSesInfo); | |
2202 | /* if the socketUseCount is now zero */ | |
4523cc30 | 2203 | if ((temp_rc == -ESHUTDOWN) && |
50c2f753 | 2204 | (pSesInfo->server) && |
5d9c7206 | 2205 | (pSesInfo->server->tsk)) { |
5d9c7206 J |
2206 | force_sig(SIGKILL, |
2207 | pSesInfo->server->tsk); | |
e691b9d1 | 2208 | kthread_stop(pSesInfo->server->tsk); |
f191401f | 2209 | } |
a013689d | 2210 | } else { |
1da177e4 | 2211 | cFYI(1, ("No session or bad tcon")); |
a013689d SF |
2212 | if ((pSesInfo->server) && |
2213 | (pSesInfo->server->tsk)) { | |
a013689d SF |
2214 | force_sig(SIGKILL, |
2215 | pSesInfo->server->tsk); | |
e691b9d1 | 2216 | kthread_stop(pSesInfo->server->tsk); |
a013689d SF |
2217 | } |
2218 | } | |
1da177e4 LT |
2219 | sesInfoFree(pSesInfo); |
2220 | /* pSesInfo = NULL; */ | |
2221 | } | |
2222 | } | |
2223 | } else { | |
2224 | atomic_inc(&tcon->useCount); | |
2225 | cifs_sb->tcon = tcon; | |
2226 | tcon->ses = pSesInfo; | |
2227 | ||
82940a46 | 2228 | /* do not care if following two calls succeed - informational */ |
7f8ed420 SF |
2229 | if (!tcon->ipc) { |
2230 | CIFSSMBQFSDeviceInfo(xid, tcon); | |
2231 | CIFSSMBQFSAttributeInfo(xid, tcon); | |
2232 | } | |
50c2f753 | 2233 | |
8af18971 SF |
2234 | /* tell server which Unix caps we support */ |
2235 | if (tcon->ses->capabilities & CAP_UNIX) | |
c18c842b SF |
2236 | /* reset of caps checks mount to see if unix extensions |
2237 | disabled for just this mount */ | |
8af18971 | 2238 | reset_cifs_unix_caps(xid, tcon, sb, &volume_info); |
c18c842b SF |
2239 | else |
2240 | tcon->unix_ext = 0; /* server does not support them */ | |
2241 | ||
03a143c9 | 2242 | /* convert forward to back slashes in prepath here if needed */ |
11b6d645 IM |
2243 | if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS) == 0) |
2244 | convert_delimiter(cifs_sb->prepath, | |
2245 | CIFS_DIR_SEP(cifs_sb)); | |
03a143c9 | 2246 | |
c18c842b | 2247 | if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) { |
75865f8c | 2248 | cifs_sb->rsize = 1024 * 127; |
90c81e0b SF |
2249 | cFYI(DBG2, |
2250 | ("no very large read support, rsize now 127K")); | |
75865f8c | 2251 | } |
3e84469d SF |
2252 | if (!(tcon->ses->capabilities & CAP_LARGE_WRITE_X)) |
2253 | cifs_sb->wsize = min(cifs_sb->wsize, | |
2254 | (tcon->ses->server->maxBuf - | |
2255 | MAX_CIFS_HDR_SIZE)); | |
0ae0efad | 2256 | if (!(tcon->ses->capabilities & CAP_LARGE_READ_X)) |
50c2f753 SF |
2257 | cifs_sb->rsize = min(cifs_sb->rsize, |
2258 | (tcon->ses->server->maxBuf - | |
2259 | MAX_CIFS_HDR_SIZE)); | |
1da177e4 LT |
2260 | } |
2261 | ||
2262 | /* volume_info.password is freed above when existing session found | |
2263 | (in which case it is not needed anymore) but when new sesion is created | |
2264 | the password ptr is put in the new session structure (in which case the | |
2265 | password will be freed at unmount time) */ | |
70fe7dc0 JL |
2266 | out: |
2267 | /* zero out password before freeing */ | |
2268 | if (volume_info.password != NULL) { | |
2269 | memset(volume_info.password, 0, strlen(volume_info.password)); | |
2270 | kfree(volume_info.password); | |
2271 | } | |
f99d49ad | 2272 | kfree(volume_info.UNC); |
2fe87f02 | 2273 | kfree(volume_info.prepath); |
1da177e4 LT |
2274 | FreeXid(xid); |
2275 | return rc; | |
2276 | } | |
2277 | ||
2278 | static int | |
2279 | CIFSSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
7c7b25bc | 2280 | char session_key[CIFS_SESS_KEY_SIZE], |
1da177e4 LT |
2281 | const struct nls_table *nls_codepage) |
2282 | { | |
2283 | struct smb_hdr *smb_buffer; | |
2284 | struct smb_hdr *smb_buffer_response; | |
2285 | SESSION_SETUP_ANDX *pSMB; | |
2286 | SESSION_SETUP_ANDX *pSMBr; | |
2287 | char *bcc_ptr; | |
2288 | char *user; | |
2289 | char *domain; | |
2290 | int rc = 0; | |
2291 | int remaining_words = 0; | |
2292 | int bytes_returned = 0; | |
2293 | int len; | |
2294 | __u32 capabilities; | |
2295 | __u16 count; | |
2296 | ||
eeac8047 | 2297 | cFYI(1, ("In sesssetup")); |
4523cc30 | 2298 | if (ses == NULL) |
1da177e4 LT |
2299 | return -EINVAL; |
2300 | user = ses->userName; | |
2301 | domain = ses->domainName; | |
2302 | smb_buffer = cifs_buf_get(); | |
582d21e5 SF |
2303 | |
2304 | if (smb_buffer == NULL) | |
1da177e4 | 2305 | return -ENOMEM; |
582d21e5 | 2306 | |
1da177e4 LT |
2307 | smb_buffer_response = smb_buffer; |
2308 | pSMBr = pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2309 | ||
2310 | /* send SMBsessionSetup here */ | |
2311 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2312 | NULL /* no tCon exists yet */ , 13 /* wct */ ); | |
2313 | ||
1982c344 | 2314 | smb_buffer->Mid = GetNextMid(ses->server); |
1da177e4 LT |
2315 | pSMB->req_no_secext.AndXCommand = 0xFF; |
2316 | pSMB->req_no_secext.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2317 | pSMB->req_no_secext.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2318 | ||
50c2f753 SF |
2319 | if (ses->server->secMode & |
2320 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) | |
1da177e4 LT |
2321 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2322 | ||
2323 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2324 | CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; | |
2325 | if (ses->capabilities & CAP_UNICODE) { | |
2326 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2327 | capabilities |= CAP_UNICODE; | |
2328 | } | |
2329 | if (ses->capabilities & CAP_STATUS32) { | |
2330 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2331 | capabilities |= CAP_STATUS32; | |
2332 | } | |
2333 | if (ses->capabilities & CAP_DFS) { | |
2334 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2335 | capabilities |= CAP_DFS; | |
2336 | } | |
2337 | pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); | |
2338 | ||
50c2f753 | 2339 | pSMB->req_no_secext.CaseInsensitivePasswordLength = |
7c7b25bc | 2340 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 LT |
2341 | |
2342 | pSMB->req_no_secext.CaseSensitivePasswordLength = | |
7c7b25bc | 2343 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 2344 | bcc_ptr = pByteArea(smb_buffer); |
7c7b25bc SF |
2345 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); |
2346 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
2347 | memcpy(bcc_ptr, (char *) session_key, CIFS_SESS_KEY_SIZE); | |
2348 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
2349 | |
2350 | if (ses->capabilities & CAP_UNICODE) { | |
2351 | if ((long) bcc_ptr % 2) { /* must be word aligned for Unicode */ | |
2352 | *bcc_ptr = 0; | |
2353 | bcc_ptr++; | |
2354 | } | |
4523cc30 | 2355 | if (user == NULL) |
3979877e | 2356 | bytes_returned = 0; /* skip null user */ |
50c2f753 | 2357 | else |
1da177e4 | 2358 | bytes_returned = |
50c2f753 | 2359 | cifs_strtoUCS((__le16 *) bcc_ptr, user, 100, |
1da177e4 LT |
2360 | nls_codepage); |
2361 | /* convert number of 16 bit words to bytes */ | |
2362 | bcc_ptr += 2 * bytes_returned; | |
2363 | bcc_ptr += 2; /* trailing null */ | |
2364 | if (domain == NULL) | |
2365 | bytes_returned = | |
e89dc920 | 2366 | cifs_strtoUCS((__le16 *) bcc_ptr, |
1da177e4 LT |
2367 | "CIFS_LINUX_DOM", 32, nls_codepage); |
2368 | else | |
2369 | bytes_returned = | |
e89dc920 | 2370 | cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 LT |
2371 | nls_codepage); |
2372 | bcc_ptr += 2 * bytes_returned; | |
2373 | bcc_ptr += 2; | |
2374 | bytes_returned = | |
e89dc920 | 2375 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2376 | 32, nls_codepage); |
2377 | bcc_ptr += 2 * bytes_returned; | |
2378 | bytes_returned = | |
e9ff3990 | 2379 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, |
1da177e4 LT |
2380 | 32, nls_codepage); |
2381 | bcc_ptr += 2 * bytes_returned; | |
2382 | bcc_ptr += 2; | |
2383 | bytes_returned = | |
e89dc920 | 2384 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2385 | 64, nls_codepage); |
2386 | bcc_ptr += 2 * bytes_returned; | |
2387 | bcc_ptr += 2; | |
2388 | } else { | |
50c2f753 | 2389 | if (user != NULL) { |
1da177e4 LT |
2390 | strncpy(bcc_ptr, user, 200); |
2391 | bcc_ptr += strnlen(user, 200); | |
2392 | } | |
2393 | *bcc_ptr = 0; | |
2394 | bcc_ptr++; | |
2395 | if (domain == NULL) { | |
2396 | strcpy(bcc_ptr, "CIFS_LINUX_DOM"); | |
2397 | bcc_ptr += strlen("CIFS_LINUX_DOM") + 1; | |
2398 | } else { | |
2399 | strncpy(bcc_ptr, domain, 64); | |
2400 | bcc_ptr += strnlen(domain, 64); | |
2401 | *bcc_ptr = 0; | |
2402 | bcc_ptr++; | |
2403 | } | |
2404 | strcpy(bcc_ptr, "Linux version "); | |
2405 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2406 | strcpy(bcc_ptr, utsname()->release); |
2407 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2408 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2409 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2410 | } | |
2411 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2412 | smb_buffer->smb_buf_length += count; | |
2413 | pSMB->req_no_secext.ByteCount = cpu_to_le16(count); | |
2414 | ||
2415 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2416 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2417 | if (rc) { |
2418 | /* rc = map_smb_to_linux_error(smb_buffer_response); now done in SendReceive */ | |
2419 | } else if ((smb_buffer_response->WordCount == 3) | |
2420 | || (smb_buffer_response->WordCount == 4)) { | |
2421 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2422 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2423 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2424 | cFYI(1, (" Guest login")); /* BB mark SesInfo struct? */ |
2425 | ses->Suid = smb_buffer_response->Uid; /* UID left in wire format | |
2426 | (little endian) */ | |
1da177e4 | 2427 | cFYI(1, ("UID = %d ", ses->Suid)); |
50c2f753 SF |
2428 | /* response can have either 3 or 4 word count - Samba sends 3 */ |
2429 | bcc_ptr = pByteArea(smb_buffer_response); | |
1da177e4 LT |
2430 | if ((pSMBr->resp.hdr.WordCount == 3) |
2431 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2432 | && (blob_len < pSMBr->resp.ByteCount))) { | |
2433 | if (pSMBr->resp.hdr.WordCount == 4) | |
2434 | bcc_ptr += blob_len; | |
2435 | ||
2436 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2437 | if ((long) (bcc_ptr) % 2) { | |
2438 | remaining_words = | |
50c2f753 SF |
2439 | (BCC(smb_buffer_response) - 1) / 2; |
2440 | /* Unicode strings must be word | |
2441 | aligned */ | |
2442 | bcc_ptr++; | |
1da177e4 LT |
2443 | } else { |
2444 | remaining_words = | |
2445 | BCC(smb_buffer_response) / 2; | |
2446 | } | |
2447 | len = | |
2448 | UniStrnlen((wchar_t *) bcc_ptr, | |
2449 | remaining_words - 1); | |
2450 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2451 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2452 | terminating last Unicode string in response */ | |
fb8c4b14 | 2453 | if (ses->serverOS) |
a424f8bf | 2454 | kfree(ses->serverOS); |
50c2f753 SF |
2455 | ses->serverOS = kzalloc(2 * (len + 1), |
2456 | GFP_KERNEL); | |
fb8c4b14 | 2457 | if (ses->serverOS == NULL) |
433dc24f | 2458 | goto sesssetup_nomem; |
1da177e4 | 2459 | cifs_strfromUCS_le(ses->serverOS, |
50c2f753 SF |
2460 | (__le16 *)bcc_ptr, |
2461 | len, nls_codepage); | |
1da177e4 LT |
2462 | bcc_ptr += 2 * (len + 1); |
2463 | remaining_words -= len + 1; | |
2464 | ses->serverOS[2 * len] = 0; | |
2465 | ses->serverOS[1 + (2 * len)] = 0; | |
2466 | if (remaining_words > 0) { | |
2467 | len = UniStrnlen((wchar_t *)bcc_ptr, | |
2468 | remaining_words-1); | |
cd49b492 | 2469 | kfree(ses->serverNOS); |
50c2f753 SF |
2470 | ses->serverNOS = kzalloc(2 * (len + 1), |
2471 | GFP_KERNEL); | |
fb8c4b14 | 2472 | if (ses->serverNOS == NULL) |
433dc24f | 2473 | goto sesssetup_nomem; |
1da177e4 | 2474 | cifs_strfromUCS_le(ses->serverNOS, |
50c2f753 SF |
2475 | (__le16 *)bcc_ptr, |
2476 | len, nls_codepage); | |
1da177e4 LT |
2477 | bcc_ptr += 2 * (len + 1); |
2478 | ses->serverNOS[2 * len] = 0; | |
2479 | ses->serverNOS[1 + (2 * len)] = 0; | |
fb8c4b14 | 2480 | if (strncmp(ses->serverNOS, |
50c2f753 | 2481 | "NT LAN Manager 4", 16) == 0) { |
467a8f8d | 2482 | cFYI(1, ("NT4 server")); |
1da177e4 LT |
2483 | ses->flags |= CIFS_SES_NT4; |
2484 | } | |
2485 | remaining_words -= len + 1; | |
2486 | if (remaining_words > 0) { | |
433dc24f | 2487 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
50c2f753 SF |
2488 | /* last string is not always null terminated |
2489 | (for e.g. for Windows XP & 2000) */ | |
fb8c4b14 | 2490 | if (ses->serverDomain) |
a424f8bf | 2491 | kfree(ses->serverDomain); |
1da177e4 | 2492 | ses->serverDomain = |
50c2f753 SF |
2493 | kzalloc(2*(len+1), |
2494 | GFP_KERNEL); | |
fb8c4b14 | 2495 | if (ses->serverDomain == NULL) |
433dc24f | 2496 | goto sesssetup_nomem; |
1da177e4 | 2497 | cifs_strfromUCS_le(ses->serverDomain, |
50c2f753 SF |
2498 | (__le16 *)bcc_ptr, |
2499 | len, nls_codepage); | |
1da177e4 LT |
2500 | bcc_ptr += 2 * (len + 1); |
2501 | ses->serverDomain[2*len] = 0; | |
2502 | ses->serverDomain[1+(2*len)] = 0; | |
50c2f753 SF |
2503 | } else { /* else no more room so create |
2504 | dummy domain string */ | |
fb8c4b14 | 2505 | if (ses->serverDomain) |
a424f8bf | 2506 | kfree(ses->serverDomain); |
50c2f753 | 2507 | ses->serverDomain = |
e915fc49 | 2508 | kzalloc(2, GFP_KERNEL); |
a424f8bf | 2509 | } |
50c2f753 SF |
2510 | } else { /* no room so create dummy domain |
2511 | and NOS string */ | |
2512 | ||
433dc24f SF |
2513 | /* if these kcallocs fail not much we |
2514 | can do, but better to not fail the | |
2515 | sesssetup itself */ | |
cd49b492 | 2516 | kfree(ses->serverDomain); |
1da177e4 | 2517 | ses->serverDomain = |
e915fc49 | 2518 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2519 | kfree(ses->serverNOS); |
1da177e4 | 2520 | ses->serverNOS = |
e915fc49 | 2521 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2522 | } |
2523 | } else { /* ASCII */ | |
2524 | len = strnlen(bcc_ptr, 1024); | |
2525 | if (((long) bcc_ptr + len) - (long) | |
2526 | pByteArea(smb_buffer_response) | |
2527 | <= BCC(smb_buffer_response)) { | |
cd49b492 | 2528 | kfree(ses->serverOS); |
50c2f753 SF |
2529 | ses->serverOS = kzalloc(len + 1, |
2530 | GFP_KERNEL); | |
fb8c4b14 | 2531 | if (ses->serverOS == NULL) |
433dc24f | 2532 | goto sesssetup_nomem; |
50c2f753 | 2533 | strncpy(ses->serverOS, bcc_ptr, len); |
1da177e4 LT |
2534 | |
2535 | bcc_ptr += len; | |
50c2f753 SF |
2536 | /* null terminate the string */ |
2537 | bcc_ptr[0] = 0; | |
1da177e4 LT |
2538 | bcc_ptr++; |
2539 | ||
2540 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2541 | kfree(ses->serverNOS); |
50c2f753 SF |
2542 | ses->serverNOS = kzalloc(len + 1, |
2543 | GFP_KERNEL); | |
fb8c4b14 | 2544 | if (ses->serverNOS == NULL) |
433dc24f | 2545 | goto sesssetup_nomem; |
1da177e4 LT |
2546 | strncpy(ses->serverNOS, bcc_ptr, len); |
2547 | bcc_ptr += len; | |
2548 | bcc_ptr[0] = 0; | |
2549 | bcc_ptr++; | |
2550 | ||
2551 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 2552 | if (ses->serverDomain) |
a424f8bf | 2553 | kfree(ses->serverDomain); |
50c2f753 SF |
2554 | ses->serverDomain = kzalloc(len + 1, |
2555 | GFP_KERNEL); | |
fb8c4b14 | 2556 | if (ses->serverDomain == NULL) |
433dc24f | 2557 | goto sesssetup_nomem; |
50c2f753 SF |
2558 | strncpy(ses->serverDomain, bcc_ptr, |
2559 | len); | |
1da177e4 LT |
2560 | bcc_ptr += len; |
2561 | bcc_ptr[0] = 0; | |
2562 | bcc_ptr++; | |
2563 | } else | |
2564 | cFYI(1, | |
50c2f753 SF |
2565 | ("Variable field of length %d " |
2566 | "extends beyond end of smb ", | |
1da177e4 LT |
2567 | len)); |
2568 | } | |
2569 | } else { | |
2570 | cERROR(1, | |
50c2f753 SF |
2571 | (" Security Blob Length extends beyond " |
2572 | "end of SMB")); | |
1da177e4 LT |
2573 | } |
2574 | } else { | |
2575 | cERROR(1, | |
2576 | (" Invalid Word count %d: ", | |
2577 | smb_buffer_response->WordCount)); | |
2578 | rc = -EIO; | |
2579 | } | |
433dc24f SF |
2580 | sesssetup_nomem: /* do not return an error on nomem for the info strings, |
2581 | since that could make reconnection harder, and | |
2582 | reconnection might be needed to free memory */ | |
a8a11d39 | 2583 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2584 | |
2585 | return rc; | |
2586 | } | |
2587 | ||
1da177e4 LT |
2588 | static int |
2589 | CIFSNTLMSSPNegotiateSessSetup(unsigned int xid, | |
4b18f2a9 | 2590 | struct cifsSesInfo *ses, bool *pNTLMv2_flag, |
1da177e4 LT |
2591 | const struct nls_table *nls_codepage) |
2592 | { | |
2593 | struct smb_hdr *smb_buffer; | |
2594 | struct smb_hdr *smb_buffer_response; | |
2595 | SESSION_SETUP_ANDX *pSMB; | |
2596 | SESSION_SETUP_ANDX *pSMBr; | |
2597 | char *bcc_ptr; | |
2598 | char *domain; | |
2599 | int rc = 0; | |
2600 | int remaining_words = 0; | |
2601 | int bytes_returned = 0; | |
2602 | int len; | |
6345a3a8 | 2603 | int SecurityBlobLength = sizeof(NEGOTIATE_MESSAGE); |
1da177e4 LT |
2604 | PNEGOTIATE_MESSAGE SecurityBlob; |
2605 | PCHALLENGE_MESSAGE SecurityBlob2; | |
2606 | __u32 negotiate_flags, capabilities; | |
2607 | __u16 count; | |
2608 | ||
12b3b8ff | 2609 | cFYI(1, ("In NTLMSSP sesssetup (negotiate)")); |
fb8c4b14 | 2610 | if (ses == NULL) |
1da177e4 LT |
2611 | return -EINVAL; |
2612 | domain = ses->domainName; | |
4b18f2a9 | 2613 | *pNTLMv2_flag = false; |
1da177e4 LT |
2614 | smb_buffer = cifs_buf_get(); |
2615 | if (smb_buffer == NULL) { | |
2616 | return -ENOMEM; | |
2617 | } | |
2618 | smb_buffer_response = smb_buffer; | |
2619 | pSMB = (SESSION_SETUP_ANDX *) smb_buffer; | |
2620 | pSMBr = (SESSION_SETUP_ANDX *) smb_buffer_response; | |
2621 | ||
2622 | /* send SMBsessionSetup here */ | |
2623 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2624 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2625 | |
2626 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2627 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; |
2628 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); | |
2629 | ||
2630 | pSMB->req.AndXCommand = 0xFF; | |
2631 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2632 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2633 | ||
fb8c4b14 | 2634 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2635 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2636 | ||
2637 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
2638 | CAP_EXTENDED_SECURITY; | |
2639 | if (ses->capabilities & CAP_UNICODE) { | |
2640 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2641 | capabilities |= CAP_UNICODE; | |
2642 | } | |
2643 | if (ses->capabilities & CAP_STATUS32) { | |
2644 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2645 | capabilities |= CAP_STATUS32; | |
2646 | } | |
2647 | if (ses->capabilities & CAP_DFS) { | |
2648 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2649 | capabilities |= CAP_DFS; | |
2650 | } | |
2651 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2652 | ||
2653 | bcc_ptr = (char *) &pSMB->req.SecurityBlob; | |
2654 | SecurityBlob = (PNEGOTIATE_MESSAGE) bcc_ptr; | |
2655 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); | |
2656 | SecurityBlob->MessageType = NtLmNegotiate; | |
2657 | negotiate_flags = | |
2658 | NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_NEGOTIATE_OEM | | |
12b3b8ff SF |
2659 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_NTLM | |
2660 | NTLMSSP_NEGOTIATE_56 | | |
1da177e4 | 2661 | /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN | */ NTLMSSP_NEGOTIATE_128; |
fb8c4b14 | 2662 | if (sign_CIFS_PDUs) |
1da177e4 | 2663 | negotiate_flags |= NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 2664 | /* if (ntlmv2_support) |
3979877e | 2665 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2;*/ |
1da177e4 LT |
2666 | /* setup pointers to domain name and workstation name */ |
2667 | bcc_ptr += SecurityBlobLength; | |
2668 | ||
2669 | SecurityBlob->WorkstationName.Buffer = 0; | |
2670 | SecurityBlob->WorkstationName.Length = 0; | |
2671 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
2672 | ||
12b3b8ff SF |
2673 | /* Domain not sent on first Sesssetup in NTLMSSP, instead it is sent |
2674 | along with username on auth request (ie the response to challenge) */ | |
2675 | SecurityBlob->DomainName.Buffer = 0; | |
2676 | SecurityBlob->DomainName.Length = 0; | |
2677 | SecurityBlob->DomainName.MaximumLength = 0; | |
1da177e4 LT |
2678 | if (ses->capabilities & CAP_UNICODE) { |
2679 | if ((long) bcc_ptr % 2) { | |
2680 | *bcc_ptr = 0; | |
2681 | bcc_ptr++; | |
2682 | } | |
2683 | ||
2684 | bytes_returned = | |
e89dc920 | 2685 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
2686 | 32, nls_codepage); |
2687 | bcc_ptr += 2 * bytes_returned; | |
2688 | bytes_returned = | |
e9ff3990 | 2689 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
2690 | nls_codepage); |
2691 | bcc_ptr += 2 * bytes_returned; | |
2692 | bcc_ptr += 2; /* null terminate Linux version */ | |
2693 | bytes_returned = | |
e89dc920 | 2694 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
2695 | 64, nls_codepage); |
2696 | bcc_ptr += 2 * bytes_returned; | |
2697 | *(bcc_ptr + 1) = 0; | |
2698 | *(bcc_ptr + 2) = 0; | |
2699 | bcc_ptr += 2; /* null terminate network opsys string */ | |
2700 | *(bcc_ptr + 1) = 0; | |
2701 | *(bcc_ptr + 2) = 0; | |
2702 | bcc_ptr += 2; /* null domain */ | |
2703 | } else { /* ASCII */ | |
2704 | strcpy(bcc_ptr, "Linux version "); | |
2705 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
2706 | strcpy(bcc_ptr, utsname()->release); |
2707 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
2708 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
2709 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
2710 | bcc_ptr++; /* empty domain field */ | |
2711 | *bcc_ptr = 0; | |
2712 | } | |
2713 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
2714 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
2715 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
2716 | smb_buffer->smb_buf_length += count; | |
2717 | pSMB->req.ByteCount = cpu_to_le16(count); | |
2718 | ||
2719 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 2720 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 LT |
2721 | |
2722 | if (smb_buffer_response->Status.CifsError == | |
2723 | cpu_to_le32(NT_STATUS_MORE_PROCESSING_REQUIRED)) | |
2724 | rc = 0; | |
2725 | ||
2726 | if (rc) { | |
2727 | /* rc = map_smb_to_linux_error(smb_buffer_response); *//* done in SendReceive now */ | |
2728 | } else if ((smb_buffer_response->WordCount == 3) | |
2729 | || (smb_buffer_response->WordCount == 4)) { | |
2730 | __u16 action = le16_to_cpu(pSMBr->resp.Action); | |
2731 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); | |
2732 | ||
2733 | if (action & GUEST_LOGIN) | |
50c2f753 SF |
2734 | cFYI(1, (" Guest login")); |
2735 | /* Do we want to set anything in SesInfo struct when guest login? */ | |
1da177e4 | 2736 | |
50c2f753 SF |
2737 | bcc_ptr = pByteArea(smb_buffer_response); |
2738 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
2739 | |
2740 | SecurityBlob2 = (PCHALLENGE_MESSAGE) bcc_ptr; | |
2741 | if (SecurityBlob2->MessageType != NtLmChallenge) { | |
2742 | cFYI(1, | |
2743 | ("Unexpected NTLMSSP message type received %d", | |
2744 | SecurityBlob2->MessageType)); | |
2745 | } else if (ses) { | |
50c2f753 | 2746 | ses->Suid = smb_buffer_response->Uid; /* UID left in le format */ |
12b3b8ff | 2747 | cFYI(1, ("UID = %d", ses->Suid)); |
1da177e4 LT |
2748 | if ((pSMBr->resp.hdr.WordCount == 3) |
2749 | || ((pSMBr->resp.hdr.WordCount == 4) | |
2750 | && (blob_len < | |
2751 | pSMBr->resp.ByteCount))) { | |
2752 | ||
2753 | if (pSMBr->resp.hdr.WordCount == 4) { | |
2754 | bcc_ptr += blob_len; | |
12b3b8ff | 2755 | cFYI(1, ("Security Blob Length %d", |
1da177e4 LT |
2756 | blob_len)); |
2757 | } | |
2758 | ||
12b3b8ff | 2759 | cFYI(1, ("NTLMSSP Challenge rcvd")); |
1da177e4 LT |
2760 | |
2761 | memcpy(ses->server->cryptKey, | |
2762 | SecurityBlob2->Challenge, | |
2763 | CIFS_CRYPTO_KEY_SIZE); | |
50c2f753 | 2764 | if (SecurityBlob2->NegotiateFlags & |
12b3b8ff | 2765 | cpu_to_le32(NTLMSSP_NEGOTIATE_NTLMV2)) |
4b18f2a9 | 2766 | *pNTLMv2_flag = true; |
1da177e4 | 2767 | |
50c2f753 SF |
2768 | if ((SecurityBlob2->NegotiateFlags & |
2769 | cpu_to_le32(NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) | |
1da177e4 | 2770 | || (sign_CIFS_PDUs > 1)) |
50c2f753 SF |
2771 | ses->server->secMode |= |
2772 | SECMODE_SIGN_REQUIRED; | |
2773 | if ((SecurityBlob2->NegotiateFlags & | |
1da177e4 | 2774 | cpu_to_le32(NTLMSSP_NEGOTIATE_SIGN)) && (sign_CIFS_PDUs)) |
50c2f753 | 2775 | ses->server->secMode |= |
1da177e4 LT |
2776 | SECMODE_SIGN_ENABLED; |
2777 | ||
2778 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
2779 | if ((long) (bcc_ptr) % 2) { | |
2780 | remaining_words = | |
2781 | (BCC(smb_buffer_response) | |
2782 | - 1) / 2; | |
50c2f753 SF |
2783 | /* Must word align unicode strings */ |
2784 | bcc_ptr++; | |
1da177e4 LT |
2785 | } else { |
2786 | remaining_words = | |
2787 | BCC | |
2788 | (smb_buffer_response) / 2; | |
2789 | } | |
2790 | len = | |
2791 | UniStrnlen((wchar_t *) bcc_ptr, | |
2792 | remaining_words - 1); | |
2793 | /* We look for obvious messed up bcc or strings in response so we do not go off | |
2794 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
2795 | terminating last Unicode string in response */ | |
fb8c4b14 | 2796 | if (ses->serverOS) |
a424f8bf | 2797 | kfree(ses->serverOS); |
1da177e4 | 2798 | ses->serverOS = |
e915fc49 | 2799 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 2800 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 2801 | (__le16 *) |
1da177e4 LT |
2802 | bcc_ptr, len, |
2803 | nls_codepage); | |
2804 | bcc_ptr += 2 * (len + 1); | |
2805 | remaining_words -= len + 1; | |
2806 | ses->serverOS[2 * len] = 0; | |
2807 | ses->serverOS[1 + (2 * len)] = 0; | |
2808 | if (remaining_words > 0) { | |
2809 | len = UniStrnlen((wchar_t *) | |
2810 | bcc_ptr, | |
2811 | remaining_words | |
2812 | - 1); | |
cd49b492 | 2813 | kfree(ses->serverNOS); |
1da177e4 | 2814 | ses->serverNOS = |
e915fc49 | 2815 | kzalloc(2 * (len + 1), |
1da177e4 LT |
2816 | GFP_KERNEL); |
2817 | cifs_strfromUCS_le(ses-> | |
2818 | serverNOS, | |
e89dc920 | 2819 | (__le16 *) |
1da177e4 LT |
2820 | bcc_ptr, |
2821 | len, | |
2822 | nls_codepage); | |
2823 | bcc_ptr += 2 * (len + 1); | |
2824 | ses->serverNOS[2 * len] = 0; | |
2825 | ses->serverNOS[1 + | |
2826 | (2 * len)] = 0; | |
2827 | remaining_words -= len + 1; | |
2828 | if (remaining_words > 0) { | |
50c2f753 SF |
2829 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
2830 | /* last string not always null terminated | |
2831 | (for e.g. for Windows XP & 2000) */ | |
cd49b492 | 2832 | kfree(ses->serverDomain); |
1da177e4 | 2833 | ses->serverDomain = |
e915fc49 | 2834 | kzalloc(2 * |
1da177e4 LT |
2835 | (len + |
2836 | 1), | |
2837 | GFP_KERNEL); | |
2838 | cifs_strfromUCS_le | |
e89dc920 SF |
2839 | (ses->serverDomain, |
2840 | (__le16 *)bcc_ptr, | |
2841 | len, nls_codepage); | |
1da177e4 LT |
2842 | bcc_ptr += |
2843 | 2 * (len + 1); | |
e89dc920 | 2844 | ses->serverDomain[2*len] |
1da177e4 | 2845 | = 0; |
e89dc920 SF |
2846 | ses->serverDomain |
2847 | [1 + (2 * len)] | |
1da177e4 LT |
2848 | = 0; |
2849 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 2850 | else { |
cd49b492 | 2851 | kfree(ses->serverDomain); |
1da177e4 | 2852 | ses->serverDomain = |
e915fc49 | 2853 | kzalloc(2, |
1da177e4 | 2854 | GFP_KERNEL); |
a424f8bf | 2855 | } |
1da177e4 | 2856 | } else { /* no room so create dummy domain and NOS string */ |
cd49b492 | 2857 | kfree(ses->serverDomain); |
1da177e4 | 2858 | ses->serverDomain = |
e915fc49 | 2859 | kzalloc(2, GFP_KERNEL); |
cd49b492 | 2860 | kfree(ses->serverNOS); |
1da177e4 | 2861 | ses->serverNOS = |
e915fc49 | 2862 | kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
2863 | } |
2864 | } else { /* ASCII */ | |
2865 | len = strnlen(bcc_ptr, 1024); | |
2866 | if (((long) bcc_ptr + len) - (long) | |
2867 | pByteArea(smb_buffer_response) | |
2868 | <= BCC(smb_buffer_response)) { | |
fb8c4b14 | 2869 | if (ses->serverOS) |
a424f8bf | 2870 | kfree(ses->serverOS); |
1da177e4 | 2871 | ses->serverOS = |
e915fc49 | 2872 | kzalloc(len + 1, |
1da177e4 LT |
2873 | GFP_KERNEL); |
2874 | strncpy(ses->serverOS, | |
2875 | bcc_ptr, len); | |
2876 | ||
2877 | bcc_ptr += len; | |
2878 | bcc_ptr[0] = 0; /* null terminate string */ | |
2879 | bcc_ptr++; | |
2880 | ||
2881 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2882 | kfree(ses->serverNOS); |
1da177e4 | 2883 | ses->serverNOS = |
e915fc49 | 2884 | kzalloc(len + 1, |
1da177e4 LT |
2885 | GFP_KERNEL); |
2886 | strncpy(ses->serverNOS, bcc_ptr, len); | |
2887 | bcc_ptr += len; | |
2888 | bcc_ptr[0] = 0; | |
2889 | bcc_ptr++; | |
2890 | ||
2891 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 2892 | kfree(ses->serverDomain); |
1da177e4 | 2893 | ses->serverDomain = |
e915fc49 | 2894 | kzalloc(len + 1, |
1da177e4 | 2895 | GFP_KERNEL); |
50c2f753 SF |
2896 | strncpy(ses->serverDomain, |
2897 | bcc_ptr, len); | |
1da177e4 LT |
2898 | bcc_ptr += len; |
2899 | bcc_ptr[0] = 0; | |
2900 | bcc_ptr++; | |
2901 | } else | |
2902 | cFYI(1, | |
63135e08 SF |
2903 | ("field of length %d " |
2904 | "extends beyond end of smb", | |
1da177e4 LT |
2905 | len)); |
2906 | } | |
2907 | } else { | |
50c2f753 SF |
2908 | cERROR(1, ("Security Blob Length extends beyond" |
2909 | " end of SMB")); | |
1da177e4 LT |
2910 | } |
2911 | } else { | |
2912 | cERROR(1, ("No session structure passed in.")); | |
2913 | } | |
2914 | } else { | |
2915 | cERROR(1, | |
5815449d | 2916 | (" Invalid Word count %d:", |
1da177e4 LT |
2917 | smb_buffer_response->WordCount)); |
2918 | rc = -EIO; | |
2919 | } | |
2920 | ||
a8a11d39 | 2921 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
2922 | |
2923 | return rc; | |
2924 | } | |
2925 | static int | |
2926 | CIFSNTLMSSPAuthSessSetup(unsigned int xid, struct cifsSesInfo *ses, | |
4b18f2a9 | 2927 | char *ntlm_session_key, bool ntlmv2_flag, |
6345a3a8 | 2928 | const struct nls_table *nls_codepage) |
1da177e4 LT |
2929 | { |
2930 | struct smb_hdr *smb_buffer; | |
2931 | struct smb_hdr *smb_buffer_response; | |
2932 | SESSION_SETUP_ANDX *pSMB; | |
2933 | SESSION_SETUP_ANDX *pSMBr; | |
2934 | char *bcc_ptr; | |
2935 | char *user; | |
2936 | char *domain; | |
2937 | int rc = 0; | |
2938 | int remaining_words = 0; | |
2939 | int bytes_returned = 0; | |
2940 | int len; | |
6345a3a8 | 2941 | int SecurityBlobLength = sizeof(AUTHENTICATE_MESSAGE); |
1da177e4 LT |
2942 | PAUTHENTICATE_MESSAGE SecurityBlob; |
2943 | __u32 negotiate_flags, capabilities; | |
2944 | __u16 count; | |
2945 | ||
2946 | cFYI(1, ("In NTLMSSPSessSetup (Authenticate)")); | |
fb8c4b14 | 2947 | if (ses == NULL) |
1da177e4 LT |
2948 | return -EINVAL; |
2949 | user = ses->userName; | |
2950 | domain = ses->domainName; | |
2951 | smb_buffer = cifs_buf_get(); | |
2952 | if (smb_buffer == NULL) { | |
2953 | return -ENOMEM; | |
2954 | } | |
2955 | smb_buffer_response = smb_buffer; | |
6345a3a8 CG |
2956 | pSMB = (SESSION_SETUP_ANDX *)smb_buffer; |
2957 | pSMBr = (SESSION_SETUP_ANDX *)smb_buffer_response; | |
1da177e4 LT |
2958 | |
2959 | /* send SMBsessionSetup here */ | |
2960 | header_assemble(smb_buffer, SMB_COM_SESSION_SETUP_ANDX, | |
2961 | NULL /* no tCon exists yet */ , 12 /* wct */ ); | |
1982c344 SF |
2962 | |
2963 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
2964 | pSMB->req.hdr.Flags |= (SMBFLG_CASELESS | SMBFLG_CANONICAL_PATH_FORMAT); |
2965 | pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; | |
2966 | pSMB->req.AndXCommand = 0xFF; | |
2967 | pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); | |
2968 | pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); | |
2969 | ||
2970 | pSMB->req.hdr.Uid = ses->Suid; | |
2971 | ||
fb8c4b14 | 2972 | if (ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
2973 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
2974 | ||
2975 | capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | | |
6345a3a8 | 2976 | CAP_EXTENDED_SECURITY; |
1da177e4 LT |
2977 | if (ses->capabilities & CAP_UNICODE) { |
2978 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
2979 | capabilities |= CAP_UNICODE; | |
2980 | } | |
2981 | if (ses->capabilities & CAP_STATUS32) { | |
2982 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
2983 | capabilities |= CAP_STATUS32; | |
2984 | } | |
2985 | if (ses->capabilities & CAP_DFS) { | |
2986 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
2987 | capabilities |= CAP_DFS; | |
2988 | } | |
2989 | pSMB->req.Capabilities = cpu_to_le32(capabilities); | |
2990 | ||
6345a3a8 CG |
2991 | bcc_ptr = (char *)&pSMB->req.SecurityBlob; |
2992 | SecurityBlob = (PAUTHENTICATE_MESSAGE)bcc_ptr; | |
1da177e4 LT |
2993 | strncpy(SecurityBlob->Signature, NTLMSSP_SIGNATURE, 8); |
2994 | SecurityBlob->MessageType = NtLmAuthenticate; | |
2995 | bcc_ptr += SecurityBlobLength; | |
6345a3a8 CG |
2996 | negotiate_flags = NTLMSSP_NEGOTIATE_UNICODE | NTLMSSP_REQUEST_TARGET | |
2997 | NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_TARGET_INFO | | |
2998 | 0x80000000 | NTLMSSP_NEGOTIATE_128; | |
fb8c4b14 | 2999 | if (sign_CIFS_PDUs) |
1da177e4 | 3000 | negotiate_flags |= /* NTLMSSP_NEGOTIATE_ALWAYS_SIGN |*/ NTLMSSP_NEGOTIATE_SIGN; |
fb8c4b14 | 3001 | if (ntlmv2_flag) |
1da177e4 LT |
3002 | negotiate_flags |= NTLMSSP_NEGOTIATE_NTLMV2; |
3003 | ||
3004 | /* setup pointers to domain name and workstation name */ | |
3005 | ||
3006 | SecurityBlob->WorkstationName.Buffer = 0; | |
3007 | SecurityBlob->WorkstationName.Length = 0; | |
3008 | SecurityBlob->WorkstationName.MaximumLength = 0; | |
3009 | SecurityBlob->SessionKey.Length = 0; | |
3010 | SecurityBlob->SessionKey.MaximumLength = 0; | |
3011 | SecurityBlob->SessionKey.Buffer = 0; | |
3012 | ||
3013 | SecurityBlob->LmChallengeResponse.Length = 0; | |
3014 | SecurityBlob->LmChallengeResponse.MaximumLength = 0; | |
3015 | SecurityBlob->LmChallengeResponse.Buffer = 0; | |
3016 | ||
3017 | SecurityBlob->NtChallengeResponse.Length = | |
7c7b25bc | 3018 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
1da177e4 | 3019 | SecurityBlob->NtChallengeResponse.MaximumLength = |
7c7b25bc SF |
3020 | cpu_to_le16(CIFS_SESS_KEY_SIZE); |
3021 | memcpy(bcc_ptr, ntlm_session_key, CIFS_SESS_KEY_SIZE); | |
1da177e4 LT |
3022 | SecurityBlob->NtChallengeResponse.Buffer = |
3023 | cpu_to_le32(SecurityBlobLength); | |
7c7b25bc SF |
3024 | SecurityBlobLength += CIFS_SESS_KEY_SIZE; |
3025 | bcc_ptr += CIFS_SESS_KEY_SIZE; | |
1da177e4 LT |
3026 | |
3027 | if (ses->capabilities & CAP_UNICODE) { | |
3028 | if (domain == NULL) { | |
3029 | SecurityBlob->DomainName.Buffer = 0; | |
3030 | SecurityBlob->DomainName.Length = 0; | |
3031 | SecurityBlob->DomainName.MaximumLength = 0; | |
3032 | } else { | |
77159b4d | 3033 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, domain, 64, |
1da177e4 | 3034 | nls_codepage); |
77159b4d | 3035 | ln *= 2; |
1da177e4 | 3036 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3037 | cpu_to_le16(ln); |
1da177e4 LT |
3038 | SecurityBlob->DomainName.Buffer = |
3039 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3040 | bcc_ptr += ln; |
3041 | SecurityBlobLength += ln; | |
3042 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3043 | } |
3044 | if (user == NULL) { | |
3045 | SecurityBlob->UserName.Buffer = 0; | |
3046 | SecurityBlob->UserName.Length = 0; | |
3047 | SecurityBlob->UserName.MaximumLength = 0; | |
3048 | } else { | |
77159b4d | 3049 | __u16 ln = cifs_strtoUCS((__le16 *) bcc_ptr, user, 64, |
1da177e4 | 3050 | nls_codepage); |
77159b4d | 3051 | ln *= 2; |
1da177e4 | 3052 | SecurityBlob->UserName.MaximumLength = |
77159b4d | 3053 | cpu_to_le16(ln); |
1da177e4 LT |
3054 | SecurityBlob->UserName.Buffer = |
3055 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3056 | bcc_ptr += ln; |
3057 | SecurityBlobLength += ln; | |
3058 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3059 | } |
3060 | ||
63135e08 SF |
3061 | /* SecurityBlob->WorkstationName.Length = |
3062 | cifs_strtoUCS((__le16 *) bcc_ptr, "AMACHINE",64, nls_codepage); | |
1da177e4 | 3063 | SecurityBlob->WorkstationName.Length *= 2; |
63135e08 SF |
3064 | SecurityBlob->WorkstationName.MaximumLength = |
3065 | cpu_to_le16(SecurityBlob->WorkstationName.Length); | |
3066 | SecurityBlob->WorkstationName.Buffer = | |
3067 | cpu_to_le32(SecurityBlobLength); | |
1da177e4 LT |
3068 | bcc_ptr += SecurityBlob->WorkstationName.Length; |
3069 | SecurityBlobLength += SecurityBlob->WorkstationName.Length; | |
63135e08 SF |
3070 | SecurityBlob->WorkstationName.Length = |
3071 | cpu_to_le16(SecurityBlob->WorkstationName.Length); */ | |
1da177e4 LT |
3072 | |
3073 | if ((long) bcc_ptr % 2) { | |
3074 | *bcc_ptr = 0; | |
3075 | bcc_ptr++; | |
3076 | } | |
3077 | bytes_returned = | |
e89dc920 | 3078 | cifs_strtoUCS((__le16 *) bcc_ptr, "Linux version ", |
1da177e4 LT |
3079 | 32, nls_codepage); |
3080 | bcc_ptr += 2 * bytes_returned; | |
3081 | bytes_returned = | |
e9ff3990 | 3082 | cifs_strtoUCS((__le16 *) bcc_ptr, utsname()->release, 32, |
1da177e4 LT |
3083 | nls_codepage); |
3084 | bcc_ptr += 2 * bytes_returned; | |
3085 | bcc_ptr += 2; /* null term version string */ | |
3086 | bytes_returned = | |
e89dc920 | 3087 | cifs_strtoUCS((__le16 *) bcc_ptr, CIFS_NETWORK_OPSYS, |
1da177e4 LT |
3088 | 64, nls_codepage); |
3089 | bcc_ptr += 2 * bytes_returned; | |
3090 | *(bcc_ptr + 1) = 0; | |
3091 | *(bcc_ptr + 2) = 0; | |
3092 | bcc_ptr += 2; /* null terminate network opsys string */ | |
3093 | *(bcc_ptr + 1) = 0; | |
3094 | *(bcc_ptr + 2) = 0; | |
3095 | bcc_ptr += 2; /* null domain */ | |
3096 | } else { /* ASCII */ | |
3097 | if (domain == NULL) { | |
3098 | SecurityBlob->DomainName.Buffer = 0; | |
3099 | SecurityBlob->DomainName.Length = 0; | |
3100 | SecurityBlob->DomainName.MaximumLength = 0; | |
3101 | } else { | |
77159b4d | 3102 | __u16 ln; |
1da177e4 LT |
3103 | negotiate_flags |= NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED; |
3104 | strncpy(bcc_ptr, domain, 63); | |
77159b4d | 3105 | ln = strnlen(domain, 64); |
1da177e4 | 3106 | SecurityBlob->DomainName.MaximumLength = |
77159b4d | 3107 | cpu_to_le16(ln); |
1da177e4 LT |
3108 | SecurityBlob->DomainName.Buffer = |
3109 | cpu_to_le32(SecurityBlobLength); | |
77159b4d SF |
3110 | bcc_ptr += ln; |
3111 | SecurityBlobLength += ln; | |
3112 | SecurityBlob->DomainName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3113 | } |
3114 | if (user == NULL) { | |
3115 | SecurityBlob->UserName.Buffer = 0; | |
3116 | SecurityBlob->UserName.Length = 0; | |
3117 | SecurityBlob->UserName.MaximumLength = 0; | |
3118 | } else { | |
77159b4d | 3119 | __u16 ln; |
1da177e4 | 3120 | strncpy(bcc_ptr, user, 63); |
77159b4d SF |
3121 | ln = strnlen(user, 64); |
3122 | SecurityBlob->UserName.MaximumLength = cpu_to_le16(ln); | |
1da177e4 | 3123 | SecurityBlob->UserName.Buffer = |
77159b4d SF |
3124 | cpu_to_le32(SecurityBlobLength); |
3125 | bcc_ptr += ln; | |
3126 | SecurityBlobLength += ln; | |
3127 | SecurityBlob->UserName.Length = cpu_to_le16(ln); | |
1da177e4 LT |
3128 | } |
3129 | /* BB fill in our workstation name if known BB */ | |
3130 | ||
3131 | strcpy(bcc_ptr, "Linux version "); | |
3132 | bcc_ptr += strlen("Linux version "); | |
e9ff3990 SH |
3133 | strcpy(bcc_ptr, utsname()->release); |
3134 | bcc_ptr += strlen(utsname()->release) + 1; | |
1da177e4 LT |
3135 | strcpy(bcc_ptr, CIFS_NETWORK_OPSYS); |
3136 | bcc_ptr += strlen(CIFS_NETWORK_OPSYS) + 1; | |
3137 | bcc_ptr++; /* null domain */ | |
3138 | *bcc_ptr = 0; | |
3139 | } | |
3140 | SecurityBlob->NegotiateFlags = cpu_to_le32(negotiate_flags); | |
3141 | pSMB->req.SecurityBlobLength = cpu_to_le16(SecurityBlobLength); | |
3142 | count = (long) bcc_ptr - (long) pByteArea(smb_buffer); | |
3143 | smb_buffer->smb_buf_length += count; | |
3144 | pSMB->req.ByteCount = cpu_to_le16(count); | |
3145 | ||
3146 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, | |
133672ef | 3147 | &bytes_returned, CIFS_LONG_OP); |
1da177e4 | 3148 | if (rc) { |
6345a3a8 CG |
3149 | /* rc = map_smb_to_linux_error(smb_buffer_response) done in SendReceive now */ |
3150 | } else if ((smb_buffer_response->WordCount == 3) || | |
3151 | (smb_buffer_response->WordCount == 4)) { | |
1da177e4 | 3152 | __u16 action = le16_to_cpu(pSMBr->resp.Action); |
6345a3a8 | 3153 | __u16 blob_len = le16_to_cpu(pSMBr->resp.SecurityBlobLength); |
1da177e4 | 3154 | if (action & GUEST_LOGIN) |
50c2f753 SF |
3155 | cFYI(1, (" Guest login")); /* BB Should we set anything |
3156 | in SesInfo struct ? */ | |
3157 | /* if (SecurityBlob2->MessageType != NtLm??) { | |
3158 | cFYI("Unexpected message type on auth response is %d")); | |
3159 | } */ | |
3160 | ||
1da177e4 LT |
3161 | if (ses) { |
3162 | cFYI(1, | |
50c2f753 | 3163 | ("Check challenge UID %d vs auth response UID %d", |
1da177e4 | 3164 | ses->Suid, smb_buffer_response->Uid)); |
50c2f753 SF |
3165 | /* UID left in wire format */ |
3166 | ses->Suid = smb_buffer_response->Uid; | |
3167 | bcc_ptr = pByteArea(smb_buffer_response); | |
3168 | /* response can have either 3 or 4 word count - Samba sends 3 */ | |
1da177e4 LT |
3169 | if ((pSMBr->resp.hdr.WordCount == 3) |
3170 | || ((pSMBr->resp.hdr.WordCount == 4) | |
3171 | && (blob_len < | |
3172 | pSMBr->resp.ByteCount))) { | |
3173 | if (pSMBr->resp.hdr.WordCount == 4) { | |
3174 | bcc_ptr += | |
3175 | blob_len; | |
3176 | cFYI(1, | |
3177 | ("Security Blob Length %d ", | |
3178 | blob_len)); | |
3179 | } | |
3180 | ||
3181 | cFYI(1, | |
3182 | ("NTLMSSP response to Authenticate ")); | |
3183 | ||
3184 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3185 | if ((long) (bcc_ptr) % 2) { | |
3186 | remaining_words = | |
3187 | (BCC(smb_buffer_response) | |
3188 | - 1) / 2; | |
3189 | bcc_ptr++; /* Unicode strings must be word aligned */ | |
3190 | } else { | |
3191 | remaining_words = BCC(smb_buffer_response) / 2; | |
3192 | } | |
77159b4d SF |
3193 | len = UniStrnlen((wchar_t *) bcc_ptr, |
3194 | remaining_words - 1); | |
1da177e4 LT |
3195 | /* We look for obvious messed up bcc or strings in response so we do not go off |
3196 | the end since (at least) WIN2K and Windows XP have a major bug in not null | |
3197 | terminating last Unicode string in response */ | |
fb8c4b14 | 3198 | if (ses->serverOS) |
08775834 | 3199 | kfree(ses->serverOS); |
1da177e4 | 3200 | ses->serverOS = |
e915fc49 | 3201 | kzalloc(2 * (len + 1), GFP_KERNEL); |
1da177e4 | 3202 | cifs_strfromUCS_le(ses->serverOS, |
e89dc920 | 3203 | (__le16 *) |
1da177e4 LT |
3204 | bcc_ptr, len, |
3205 | nls_codepage); | |
3206 | bcc_ptr += 2 * (len + 1); | |
3207 | remaining_words -= len + 1; | |
3208 | ses->serverOS[2 * len] = 0; | |
3209 | ses->serverOS[1 + (2 * len)] = 0; | |
3210 | if (remaining_words > 0) { | |
3211 | len = UniStrnlen((wchar_t *) | |
3212 | bcc_ptr, | |
3213 | remaining_words | |
3214 | - 1); | |
cd49b492 | 3215 | kfree(ses->serverNOS); |
1da177e4 | 3216 | ses->serverNOS = |
e915fc49 | 3217 | kzalloc(2 * (len + 1), |
1da177e4 LT |
3218 | GFP_KERNEL); |
3219 | cifs_strfromUCS_le(ses-> | |
3220 | serverNOS, | |
e89dc920 | 3221 | (__le16 *) |
1da177e4 LT |
3222 | bcc_ptr, |
3223 | len, | |
3224 | nls_codepage); | |
3225 | bcc_ptr += 2 * (len + 1); | |
3226 | ses->serverNOS[2 * len] = 0; | |
3227 | ses->serverNOS[1+(2*len)] = 0; | |
3228 | remaining_words -= len + 1; | |
3229 | if (remaining_words > 0) { | |
50c2f753 | 3230 | len = UniStrnlen((wchar_t *) bcc_ptr, remaining_words); |
1da177e4 | 3231 | /* last string not always null terminated (e.g. for Windows XP & 2000) */ |
fb8c4b14 | 3232 | if (ses->serverDomain) |
a424f8bf | 3233 | kfree(ses->serverDomain); |
1da177e4 | 3234 | ses->serverDomain = |
e915fc49 | 3235 | kzalloc(2 * |
1da177e4 LT |
3236 | (len + |
3237 | 1), | |
3238 | GFP_KERNEL); | |
3239 | cifs_strfromUCS_le | |
3240 | (ses-> | |
3241 | serverDomain, | |
e89dc920 | 3242 | (__le16 *) |
1da177e4 LT |
3243 | bcc_ptr, len, |
3244 | nls_codepage); | |
3245 | bcc_ptr += | |
3246 | 2 * (len + 1); | |
3247 | ses-> | |
3248 | serverDomain[2 | |
3249 | * len] | |
3250 | = 0; | |
3251 | ses-> | |
3252 | serverDomain[1 | |
3253 | + | |
3254 | (2 | |
3255 | * | |
3256 | len)] | |
3257 | = 0; | |
3258 | } /* else no more room so create dummy domain string */ | |
a424f8bf | 3259 | else { |
fb8c4b14 | 3260 | if (ses->serverDomain) |
a424f8bf | 3261 | kfree(ses->serverDomain); |
e915fc49 | 3262 | ses->serverDomain = kzalloc(2,GFP_KERNEL); |
a424f8bf | 3263 | } |
1da177e4 | 3264 | } else { /* no room so create dummy domain and NOS string */ |
fb8c4b14 | 3265 | if (ses->serverDomain) |
a424f8bf | 3266 | kfree(ses->serverDomain); |
e915fc49 | 3267 | ses->serverDomain = kzalloc(2, GFP_KERNEL); |
cd49b492 | 3268 | kfree(ses->serverNOS); |
e915fc49 | 3269 | ses->serverNOS = kzalloc(2, GFP_KERNEL); |
1da177e4 LT |
3270 | } |
3271 | } else { /* ASCII */ | |
3272 | len = strnlen(bcc_ptr, 1024); | |
50c2f753 SF |
3273 | if (((long) bcc_ptr + len) - |
3274 | (long) pByteArea(smb_buffer_response) | |
63135e08 | 3275 | <= BCC(smb_buffer_response)) { |
fb8c4b14 | 3276 | if (ses->serverOS) |
a424f8bf | 3277 | kfree(ses->serverOS); |
77159b4d | 3278 | ses->serverOS = kzalloc(len + 1, GFP_KERNEL); |
1da177e4 LT |
3279 | strncpy(ses->serverOS,bcc_ptr, len); |
3280 | ||
3281 | bcc_ptr += len; | |
3282 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3283 | bcc_ptr++; | |
3284 | ||
3285 | len = strnlen(bcc_ptr, 1024); | |
cd49b492 | 3286 | kfree(ses->serverNOS); |
50c2f753 SF |
3287 | ses->serverNOS = kzalloc(len+1, |
3288 | GFP_KERNEL); | |
63135e08 SF |
3289 | strncpy(ses->serverNOS, |
3290 | bcc_ptr, len); | |
1da177e4 LT |
3291 | bcc_ptr += len; |
3292 | bcc_ptr[0] = 0; | |
3293 | bcc_ptr++; | |
3294 | ||
3295 | len = strnlen(bcc_ptr, 1024); | |
fb8c4b14 | 3296 | if (ses->serverDomain) |
a424f8bf | 3297 | kfree(ses->serverDomain); |
63135e08 SF |
3298 | ses->serverDomain = |
3299 | kzalloc(len+1, | |
3300 | GFP_KERNEL); | |
3301 | strncpy(ses->serverDomain, | |
3302 | bcc_ptr, len); | |
1da177e4 LT |
3303 | bcc_ptr += len; |
3304 | bcc_ptr[0] = 0; | |
3305 | bcc_ptr++; | |
3306 | } else | |
6345a3a8 | 3307 | cFYI(1, ("field of length %d " |
63135e08 | 3308 | "extends beyond end of smb ", |
1da177e4 LT |
3309 | len)); |
3310 | } | |
3311 | } else { | |
6345a3a8 | 3312 | cERROR(1, ("Security Blob extends beyond end " |
63135e08 | 3313 | "of SMB")); |
1da177e4 LT |
3314 | } |
3315 | } else { | |
3316 | cERROR(1, ("No session structure passed in.")); | |
3317 | } | |
3318 | } else { | |
6345a3a8 | 3319 | cERROR(1, ("Invalid Word count %d: ", |
1da177e4 LT |
3320 | smb_buffer_response->WordCount)); |
3321 | rc = -EIO; | |
3322 | } | |
3323 | ||
a8a11d39 | 3324 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3325 | |
3326 | return rc; | |
3327 | } | |
3328 | ||
3329 | int | |
3330 | CIFSTCon(unsigned int xid, struct cifsSesInfo *ses, | |
3331 | const char *tree, struct cifsTconInfo *tcon, | |
3332 | const struct nls_table *nls_codepage) | |
3333 | { | |
3334 | struct smb_hdr *smb_buffer; | |
3335 | struct smb_hdr *smb_buffer_response; | |
3336 | TCONX_REQ *pSMB; | |
3337 | TCONX_RSP *pSMBr; | |
3338 | unsigned char *bcc_ptr; | |
3339 | int rc = 0; | |
3340 | int length; | |
3341 | __u16 count; | |
3342 | ||
3343 | if (ses == NULL) | |
3344 | return -EIO; | |
3345 | ||
3346 | smb_buffer = cifs_buf_get(); | |
3347 | if (smb_buffer == NULL) { | |
3348 | return -ENOMEM; | |
3349 | } | |
3350 | smb_buffer_response = smb_buffer; | |
3351 | ||
3352 | header_assemble(smb_buffer, SMB_COM_TREE_CONNECT_ANDX, | |
3353 | NULL /*no tid */ , 4 /*wct */ ); | |
1982c344 SF |
3354 | |
3355 | smb_buffer->Mid = GetNextMid(ses->server); | |
1da177e4 LT |
3356 | smb_buffer->Uid = ses->Suid; |
3357 | pSMB = (TCONX_REQ *) smb_buffer; | |
3358 | pSMBr = (TCONX_RSP *) smb_buffer_response; | |
3359 | ||
3360 | pSMB->AndXCommand = 0xFF; | |
3361 | pSMB->Flags = cpu_to_le16(TCON_EXTENDED_SECINFO); | |
1da177e4 | 3362 | bcc_ptr = &pSMB->Password[0]; |
fb8c4b14 | 3363 | if ((ses->server->secMode) & SECMODE_USER) { |
eeac8047 | 3364 | pSMB->PasswordLength = cpu_to_le16(1); /* minimum */ |
7c7b25bc | 3365 | *bcc_ptr = 0; /* password is null byte */ |
eeac8047 | 3366 | bcc_ptr++; /* skip password */ |
7c7b25bc | 3367 | /* already aligned so no need to do it below */ |
eeac8047 | 3368 | } else { |
7c7b25bc | 3369 | pSMB->PasswordLength = cpu_to_le16(CIFS_SESS_KEY_SIZE); |
eeac8047 SF |
3370 | /* BB FIXME add code to fail this if NTLMv2 or Kerberos |
3371 | specified as required (when that support is added to | |
3372 | the vfs in the future) as only NTLM or the much | |
7c7b25bc | 3373 | weaker LANMAN (which we do not send by default) is accepted |
eeac8047 SF |
3374 | by Samba (not sure whether other servers allow |
3375 | NTLMv2 password here) */ | |
7c7b25bc | 3376 | #ifdef CONFIG_CIFS_WEAK_PW_HASH |
50c2f753 | 3377 | if ((extended_security & CIFSSEC_MAY_LANMAN) && |
7c7b25bc SF |
3378 | (ses->server->secType == LANMAN)) |
3379 | calc_lanman_hash(ses, bcc_ptr); | |
3380 | else | |
3381 | #endif /* CIFS_WEAK_PW_HASH */ | |
eeac8047 SF |
3382 | SMBNTencrypt(ses->password, |
3383 | ses->server->cryptKey, | |
3384 | bcc_ptr); | |
3385 | ||
7c7b25bc | 3386 | bcc_ptr += CIFS_SESS_KEY_SIZE; |
fb8c4b14 | 3387 | if (ses->capabilities & CAP_UNICODE) { |
7c7b25bc SF |
3388 | /* must align unicode strings */ |
3389 | *bcc_ptr = 0; /* null byte password */ | |
3390 | bcc_ptr++; | |
3391 | } | |
eeac8047 | 3392 | } |
1da177e4 | 3393 | |
50c2f753 | 3394 | if (ses->server->secMode & |
a878fb22 | 3395 | (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) |
1da177e4 LT |
3396 | smb_buffer->Flags2 |= SMBFLG2_SECURITY_SIGNATURE; |
3397 | ||
3398 | if (ses->capabilities & CAP_STATUS32) { | |
3399 | smb_buffer->Flags2 |= SMBFLG2_ERR_STATUS; | |
3400 | } | |
3401 | if (ses->capabilities & CAP_DFS) { | |
3402 | smb_buffer->Flags2 |= SMBFLG2_DFS; | |
3403 | } | |
3404 | if (ses->capabilities & CAP_UNICODE) { | |
3405 | smb_buffer->Flags2 |= SMBFLG2_UNICODE; | |
3406 | length = | |
50c2f753 SF |
3407 | cifs_strtoUCS((__le16 *) bcc_ptr, tree, |
3408 | 6 /* max utf8 char length in bytes */ * | |
a878fb22 SF |
3409 | (/* server len*/ + 256 /* share len */), nls_codepage); |
3410 | bcc_ptr += 2 * length; /* convert num 16 bit words to bytes */ | |
1da177e4 LT |
3411 | bcc_ptr += 2; /* skip trailing null */ |
3412 | } else { /* ASCII */ | |
1da177e4 LT |
3413 | strcpy(bcc_ptr, tree); |
3414 | bcc_ptr += strlen(tree) + 1; | |
3415 | } | |
3416 | strcpy(bcc_ptr, "?????"); | |
3417 | bcc_ptr += strlen("?????"); | |
3418 | bcc_ptr += 1; | |
3419 | count = bcc_ptr - &pSMB->Password[0]; | |
3420 | pSMB->hdr.smb_buf_length += count; | |
3421 | pSMB->ByteCount = cpu_to_le16(count); | |
3422 | ||
133672ef SF |
3423 | rc = SendReceive(xid, ses, smb_buffer, smb_buffer_response, &length, |
3424 | CIFS_STD_OP); | |
1da177e4 LT |
3425 | |
3426 | /* if (rc) rc = map_smb_to_linux_error(smb_buffer_response); */ | |
3427 | /* above now done in SendReceive */ | |
3428 | if ((rc == 0) && (tcon != NULL)) { | |
3429 | tcon->tidStatus = CifsGood; | |
3430 | tcon->tid = smb_buffer_response->Tid; | |
3431 | bcc_ptr = pByteArea(smb_buffer_response); | |
3432 | length = strnlen(bcc_ptr, BCC(smb_buffer_response) - 2); | |
50c2f753 | 3433 | /* skip service field (NB: this field is always ASCII) */ |
7f8ed420 SF |
3434 | if (length == 3) { |
3435 | if ((bcc_ptr[0] == 'I') && (bcc_ptr[1] == 'P') && | |
3436 | (bcc_ptr[2] == 'C')) { | |
3437 | cFYI(1, ("IPC connection")); | |
3438 | tcon->ipc = 1; | |
3439 | } | |
3440 | } else if (length == 2) { | |
3441 | if ((bcc_ptr[0] == 'A') && (bcc_ptr[1] == ':')) { | |
3442 | /* the most common case */ | |
3443 | cFYI(1, ("disk share connection")); | |
3444 | } | |
3445 | } | |
50c2f753 | 3446 | bcc_ptr += length + 1; |
1da177e4 LT |
3447 | strncpy(tcon->treeName, tree, MAX_TREE_SIZE); |
3448 | if (smb_buffer->Flags2 & SMBFLG2_UNICODE) { | |
3449 | length = UniStrnlen((wchar_t *) bcc_ptr, 512); | |
3450 | if ((bcc_ptr + (2 * length)) - | |
3451 | pByteArea(smb_buffer_response) <= | |
3452 | BCC(smb_buffer_response)) { | |
f99d49ad | 3453 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3454 | tcon->nativeFileSystem = |
e915fc49 | 3455 | kzalloc(length + 2, GFP_KERNEL); |
88f370a6 SF |
3456 | if (tcon->nativeFileSystem) |
3457 | cifs_strfromUCS_le( | |
3458 | tcon->nativeFileSystem, | |
3459 | (__le16 *) bcc_ptr, | |
3460 | length, nls_codepage); | |
1da177e4 LT |
3461 | bcc_ptr += 2 * length; |
3462 | bcc_ptr[0] = 0; /* null terminate the string */ | |
3463 | bcc_ptr[1] = 0; | |
3464 | bcc_ptr += 2; | |
3465 | } | |
50c2f753 | 3466 | /* else do not bother copying these information fields*/ |
1da177e4 LT |
3467 | } else { |
3468 | length = strnlen(bcc_ptr, 1024); | |
3469 | if ((bcc_ptr + length) - | |
3470 | pByteArea(smb_buffer_response) <= | |
3471 | BCC(smb_buffer_response)) { | |
f99d49ad | 3472 | kfree(tcon->nativeFileSystem); |
1da177e4 | 3473 | tcon->nativeFileSystem = |
e915fc49 | 3474 | kzalloc(length + 1, GFP_KERNEL); |
88f370a6 SF |
3475 | if (tcon->nativeFileSystem) |
3476 | strncpy(tcon->nativeFileSystem, bcc_ptr, | |
3477 | length); | |
1da177e4 | 3478 | } |
50c2f753 | 3479 | /* else do not bother copying these information fields*/ |
1da177e4 | 3480 | } |
fb8c4b14 | 3481 | if ((smb_buffer_response->WordCount == 3) || |
1a4e15a0 SF |
3482 | (smb_buffer_response->WordCount == 7)) |
3483 | /* field is in same location */ | |
3979877e SF |
3484 | tcon->Flags = le16_to_cpu(pSMBr->OptionalSupport); |
3485 | else | |
3486 | tcon->Flags = 0; | |
1da177e4 LT |
3487 | cFYI(1, ("Tcon flags: 0x%x ", tcon->Flags)); |
3488 | } else if ((rc == 0) && tcon == NULL) { | |
50c2f753 | 3489 | /* all we need to save for IPC$ connection */ |
1da177e4 LT |
3490 | ses->ipc_tid = smb_buffer_response->Tid; |
3491 | } | |
3492 | ||
a8a11d39 | 3493 | cifs_buf_release(smb_buffer); |
1da177e4 LT |
3494 | return rc; |
3495 | } | |
3496 | ||
3497 | int | |
3498 | cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb) | |
3499 | { | |
3500 | int rc = 0; | |
3501 | int xid; | |
3502 | struct cifsSesInfo *ses = NULL; | |
3503 | struct task_struct *cifsd_task; | |
50c2f753 | 3504 | char *tmp; |
1da177e4 LT |
3505 | |
3506 | xid = GetXid(); | |
3507 | ||
3508 | if (cifs_sb->tcon) { | |
3509 | ses = cifs_sb->tcon->ses; /* save ptr to ses before delete tcon!*/ | |
3510 | rc = CIFSSMBTDis(xid, cifs_sb->tcon); | |
3511 | if (rc == -EBUSY) { | |
3512 | FreeXid(xid); | |
3513 | return 0; | |
3514 | } | |
5d941ca6 | 3515 | DeleteTconOplockQEntries(cifs_sb->tcon); |
1da177e4 LT |
3516 | tconInfoFree(cifs_sb->tcon); |
3517 | if ((ses) && (ses->server)) { | |
3518 | /* save off task so we do not refer to ses later */ | |
3519 | cifsd_task = ses->server->tsk; | |
3520 | cFYI(1, ("About to do SMBLogoff ")); | |
3521 | rc = CIFSSMBLogoff(xid, ses); | |
3522 | if (rc == -EBUSY) { | |
3523 | FreeXid(xid); | |
3524 | return 0; | |
3525 | } else if (rc == -ESHUTDOWN) { | |
467a8f8d | 3526 | cFYI(1, ("Waking up socket by sending signal")); |
f7f7c31c | 3527 | if (cifsd_task) { |
50c2f753 | 3528 | force_sig(SIGKILL, cifsd_task); |
aaf737ad | 3529 | kthread_stop(cifsd_task); |
f191401f | 3530 | } |
1da177e4 LT |
3531 | rc = 0; |
3532 | } /* else - we have an smb session | |
3533 | left on this socket do not kill cifsd */ | |
3534 | } else | |
3535 | cFYI(1, ("No session or bad tcon")); | |
3536 | } | |
50c2f753 | 3537 | |
1da177e4 | 3538 | cifs_sb->tcon = NULL; |
2fe87f02 SF |
3539 | tmp = cifs_sb->prepath; |
3540 | cifs_sb->prepathlen = 0; | |
3541 | cifs_sb->prepath = NULL; | |
3542 | kfree(tmp); | |
1da177e4 LT |
3543 | if (ses) |
3544 | sesInfoFree(ses); | |
3545 | ||
3546 | FreeXid(xid); | |
88e7d705 | 3547 | return rc; |
50c2f753 | 3548 | } |
1da177e4 LT |
3549 | |
3550 | int cifs_setup_session(unsigned int xid, struct cifsSesInfo *pSesInfo, | |
50c2f753 | 3551 | struct nls_table *nls_info) |
1da177e4 LT |
3552 | { |
3553 | int rc = 0; | |
7c7b25bc | 3554 | char ntlm_session_key[CIFS_SESS_KEY_SIZE]; |
4b18f2a9 | 3555 | bool ntlmv2_flag = false; |
ad009ac9 | 3556 | int first_time = 0; |
1da177e4 LT |
3557 | |
3558 | /* what if server changes its buffer size after dropping the session? */ | |
fb8c4b14 | 3559 | if (pSesInfo->server->maxBuf == 0) /* no need to send on reconnect */ { |
1da177e4 | 3560 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
fb8c4b14 | 3561 | if (rc == -EAGAIN) /* retry only once on 1st time connection */ { |
1da177e4 | 3562 | rc = CIFSSMBNegotiate(xid, pSesInfo); |
50c2f753 | 3563 | if (rc == -EAGAIN) |
1da177e4 LT |
3564 | rc = -EHOSTDOWN; |
3565 | } | |
fb8c4b14 | 3566 | if (rc == 0) { |
1da177e4 | 3567 | spin_lock(&GlobalMid_Lock); |
fb8c4b14 | 3568 | if (pSesInfo->server->tcpStatus != CifsExiting) |
1da177e4 LT |
3569 | pSesInfo->server->tcpStatus = CifsGood; |
3570 | else | |
3571 | rc = -EHOSTDOWN; | |
3572 | spin_unlock(&GlobalMid_Lock); | |
3573 | ||
3574 | } | |
ad009ac9 | 3575 | first_time = 1; |
1da177e4 LT |
3576 | } |
3577 | if (!rc) { | |
9ac00b7d | 3578 | pSesInfo->flags = 0; |
1da177e4 | 3579 | pSesInfo->capabilities = pSesInfo->server->capabilities; |
fb8c4b14 | 3580 | if (linuxExtEnabled == 0) |
1da177e4 | 3581 | pSesInfo->capabilities &= (~CAP_UNIX); |
ad009ac9 | 3582 | /* pSesInfo->sequence_number = 0;*/ |
50c2f753 SF |
3583 | cFYI(1, |
3584 | ("Security Mode: 0x%x Capabilities: 0x%x TimeAdjust: %d", | |
1da177e4 LT |
3585 | pSesInfo->server->secMode, |
3586 | pSesInfo->server->capabilities, | |
175ec9e1 | 3587 | pSesInfo->server->timeAdj)); |
fb8c4b14 | 3588 | if (experimEnabled < 2) |
3979877e SF |
3589 | rc = CIFS_SessSetup(xid, pSesInfo, |
3590 | first_time, nls_info); | |
189acaae | 3591 | else if (extended_security |
50c2f753 | 3592 | && (pSesInfo->capabilities |
175ec9e1 | 3593 | & CAP_EXTENDED_SECURITY) |
1da177e4 | 3594 | && (pSesInfo->server->secType == NTLMSSP)) { |
189acaae | 3595 | rc = -EOPNOTSUPP; |
1da177e4 LT |
3596 | } else if (extended_security |
3597 | && (pSesInfo->capabilities & CAP_EXTENDED_SECURITY) | |
3598 | && (pSesInfo->server->secType == RawNTLMSSP)) { | |
5815449d | 3599 | cFYI(1, ("NTLMSSP sesssetup")); |
1da177e4 LT |
3600 | rc = CIFSNTLMSSPNegotiateSessSetup(xid, |
3601 | pSesInfo, | |
3602 | &ntlmv2_flag, | |
3603 | nls_info); | |
3604 | if (!rc) { | |
fb8c4b14 | 3605 | if (ntlmv2_flag) { |
50c2f753 | 3606 | char *v2_response; |
467a8f8d | 3607 | cFYI(1, ("more secure NTLM ver2 hash")); |
50c2f753 | 3608 | if (CalcNTLMv2_partial_mac_key(pSesInfo, |
1da177e4 LT |
3609 | nls_info)) { |
3610 | rc = -ENOMEM; | |
3611 | goto ss_err_exit; | |
3612 | } else | |
3613 | v2_response = kmalloc(16 + 64 /* blob */, GFP_KERNEL); | |
fb8c4b14 | 3614 | if (v2_response) { |
50c2f753 SF |
3615 | CalcNTLMv2_response(pSesInfo, |
3616 | v2_response); | |
fb8c4b14 | 3617 | /* if (first_time) |
50c2f753 SF |
3618 | cifs_calculate_ntlmv2_mac_key( |
3619 | pSesInfo->server->mac_signing_key, | |
3620 | response, ntlm_session_key,*/ | |
1da177e4 LT |
3621 | kfree(v2_response); |
3622 | /* BB Put dummy sig in SessSetup PDU? */ | |
3623 | } else { | |
3624 | rc = -ENOMEM; | |
3625 | goto ss_err_exit; | |
3626 | } | |
3627 | ||
3628 | } else { | |
3629 | SMBNTencrypt(pSesInfo->password, | |
3630 | pSesInfo->server->cryptKey, | |
3631 | ntlm_session_key); | |
3632 | ||
fb8c4b14 | 3633 | if (first_time) |
ad009ac9 | 3634 | cifs_calculate_mac_key( |
b609f06a | 3635 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3636 | ntlm_session_key, |
3637 | pSesInfo->password); | |
1da177e4 LT |
3638 | } |
3639 | /* for better security the weaker lanman hash not sent | |
3640 | in AuthSessSetup so we no longer calculate it */ | |
3641 | ||
3642 | rc = CIFSNTLMSSPAuthSessSetup(xid, | |
3643 | pSesInfo, | |
3644 | ntlm_session_key, | |
3645 | ntlmv2_flag, | |
3646 | nls_info); | |
3647 | } | |
3648 | } else { /* old style NTLM 0.12 session setup */ | |
3649 | SMBNTencrypt(pSesInfo->password, | |
3650 | pSesInfo->server->cryptKey, | |
3651 | ntlm_session_key); | |
3652 | ||
fb8c4b14 | 3653 | if (first_time) |
ad009ac9 | 3654 | cifs_calculate_mac_key( |
b609f06a | 3655 | &pSesInfo->server->mac_signing_key, |
ad009ac9 SF |
3656 | ntlm_session_key, pSesInfo->password); |
3657 | ||
1da177e4 LT |
3658 | rc = CIFSSessSetup(xid, pSesInfo, |
3659 | ntlm_session_key, nls_info); | |
3660 | } | |
3661 | if (rc) { | |
fb8c4b14 | 3662 | cERROR(1, ("Send error in SessSetup = %d", rc)); |
1da177e4 | 3663 | } else { |
467a8f8d | 3664 | cFYI(1, ("CIFS Session Established successfully")); |
1da177e4 LT |
3665 | pSesInfo->status = CifsGood; |
3666 | } | |
3667 | } | |
3668 | ss_err_exit: | |
3669 | return rc; | |
3670 | } | |
3671 |